user manual
LFP Handheld Rev1.0
Product Manual
Product Manual
Customer Documentation
Version 1.0
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0. Table of Contents
0. Table of Contents 2
1. Introduction 4
1.1 Using the Device 5
2. Version History 6
3. Abbreviations and Designations Used 6
4. General Instructions 7
4.1 Objective of the Product Manual 7
4.2 Warranty and Liability 7
5. Safety Instructions and Warnings 8
5.1 Scope and Symbols 8
5.2 Safety Symbols - According to DIN 4844-2 8
5.2.1 Mandatory Signs 9
5.2.2 Warning Signs 9
5.2.3 Prohibition Signs 9
5.2.4 Other Signs 10
5.3 Obligations 10
5.3.1 Operator´s Obligations 10
5.3.2 Responsibilities of Operating Personnel 11
5.3.3 ESD Instructions 11
5.3.4 Residual Risks 12
5.3.5 Supplemental Instructions 13
5.3.6 Regulations and Certifications 14
6. Functional Description 14
6.1 Functionality 14
6.1.1 General Information 14
6.1.2 Normal Operation 14
6.1.3 Polling Mode 14
6.2 Illustration 15
6.2.1 Membrane Keypad 15
6.2.2 Rear View 15
Description of the Components 16
6.3 Technical Data 17
6.3.1 Device Label 17
6.3.2 Device Label FCC ID 2AP5OLFP 18
7. Installation 19
7.1 Safety Instructions 19
7.2 Qualified Installation Personnel 20
7.3 Unpacking 20
7.4 Power Supply 20
7.5 Dimensions 21
7.6 Connecting the LFP Reader 21
7.6.1 LFP Reader Operating Mode Keyboard Emulation 21
7.6.2 LFP Reader Operating Mode ASCII Protocol 21
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8. Operation 23
8.1 Operating Personnel 23
8.2 Setting the Operating Mode 23
8.3 Operating Mode Keyboard Emulation 23
8.3.1 Setup Mode 23
8.3.2 Parameters 24
8.3.3 State Diagram Operating Modes 31
8.3.4 Process Diagram 32
8.3.5 ASCII - Table 33
8.3.6 Control and Function Symbols 36
8.4 ASCII Protocol Operating Mode 37
8.4.1 Structure of the Communication Protocol 37
8.4.2 Packet Content 37
8.4.3 Data Elements 39
8.4.4 Protocol Commands 42
8.4.5 Parameters 61
8.4.6 Message Examples 68
8.4.7 Error Codes 70
9. Service and Troubleshooting 72
9.1 General Information 72
9.2 Troubleshooting Personnel 72
9.3 Safety Instructions 73
9.4 Software Releases 74
9.5 Customer Service 74
10. Disassembly and Storage 75
10.1 Disassembly 75
10.2 Storage 75
11. Transport and Disposal 75
11.1 Transport 75
11.2 Disposal 75
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1. Introduction
The device complies with the guideline "Radio Equipment Directive 2014/53/EU (RED)" of
the European Parliament and the Council on radio equipment and telecommunications terminal
equipment and the mutual recognition of conformity.
These operating instructions are addressed to the operator, who must pass them over to the
personnel responsible for installation, connection, use and repairs of the device.
The operator has to ensure that the information given in the instruction manuals and in the
enclosed documents have been read and understood.
The instruction manuals have to be held in a known and easily accessible place and must be
consulted even in the slightest doubt.
The manufacturer assumes no responsibility for damage to persons, animals, property or the
device itself caused by improper use, non-compliance with or insufficient observance of the
safety criteria contained in these instruction manual or by modification of the device or the use
of unsuitable spare parts.
The copyright for the instruction manual lies solely with
HERMOS AG
Track & Trace - RFID Division
Gartenstr.19
95490 Mistelgau
or its legal successor.
Reproduction or circulation of this document to third parties only by express written permission
of copyright holder. This also applies if only excerpts of the document are copied or circulated.
These same conditions apply to the disclosure of the document in digital format.
As of: September – 2017
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1.1 Using the Device
The device is used exclusively to read passive LF transponders.
Any other use of the device or any use beyond its intended purpose is considered non-intended and
thus improper.
In this case, the device safety and the device protection provided may be compromised. HERMOS AG
is not liable for damages resulting from such use.
The device has been developed for use in an industrial environment as a built-in device for other
systems. It has not been developed as a stand-alone or mobile device in a non-industrial environment,
such as domestic, vehicle or open air use.
Intended use also includes the following:
• Following all the operating instructions
• Following all the safety instructions
Improper use which can endanger the operator, third parties or the device include:
• The use of the device contrary to its intended purpose
• Modifications to the device as well as attachments and conversions
• Operating the device when there are obvious problems
WARNING
Risk of injury due to unauthorized modifications
Dangers exist due to unauthorised modifications to the device.
Only original spare parts from the manufacturer may be used. No modifications,
attachments or conversions may be made to the device without the permission of
HERMOS AG.
WARNING
Risk of injury and malfunction due to improper use
Dangers exist due to improper use of the device.
The device must only be used in accordance with its intended purpose.
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2. Version History
Version Date Author Amendments
1.0 07.06.2018
HERMOS AG
RK
Initial version of
customer documentation
3. Abbreviations and Designations Used
RFID
Radio Frequeny Identification
LF
Low Frequency 134,2 kHz
USB
Universal serial bus, bus system for computers
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4. General Instructions
All previous editions of this document are no longer valid with the issue of this version.
The information in this document is compiled to the best of our knowledge and belief. HERMOS AG
does not guarantee the accuracy and completeness of the information provided in this document and
is also not liable for consequential damages due to incorrect or incomplete information.
4.1 Objective of the Product Manual
The product manual serves as support and contains all necessary information which must be observed
for general safety, transport, installation and operation.
The product manual with all safety instructions (as well as all additional documents) has to be:
• Followed, read and understood by all persons working with the device
(in particular, knowledge of the safety instructions)
• Open to the public
• Consulted in the slightest doubt (security)
Objectives:
• Prevent accidents
• Increase service life and reliability of the device
• Reduce the costs of production downtime
4.2 Warranty and Liability
The "General Terms and Conditions of Sale and Delivery" of HERMOS AG apply.
The warranty period is 12 months beginning with the delivery of the device, which is verified by the
invoice or other documents.
The warranty includes repairs of all damage to the device that occurs during the warranty period
and is clearly caused by material or manufacturing defects.
Warranty and liability claims in the event of personal injury or property damage are excluded if they
are attributable to one or more of the following causes:
• Improper use of the device
• Non-observance of the information in the operating instructions
• Unauthorised structural modifications to the device
• Inadequate repair and maintenance measures
• Disaster events due to impact with foreign objects or force majeure
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5. Safety Instructions and Warnings
5.1 Scope and Symbols
Follow the general safety instructions as well as the special safety instructions included in the chapters.
The device is built according to the latest state of the art technology and recognized safety regulations.
To avoid danger to life and limb of the operator, third parties or the device when using it, use the device
exclusively for its intended purpose and in perfect condition with regard to safety.
Bodily injuries and/or property damages resulting from non-compliance with the instructions provided
in the operating instructions are the responsibility of the company operating the device or the
assigned personnel.
Faults that may compromise safety must be eliminated immediately.
DANGER
Risk of death, injury and property damage
There is a risk of danger due to disregard of the product manual and the
safety
information contained therein.
Read the product manual carefully before initial operation.
Fulfil all required safety conditions.
5.2 Safety Symbols - According to DIN 4844-2
The following special safety symbols in accordance with DIN 4844-2 are used at the corresponding
passages in the text of this product manual and require special attention depending on the combination
of the signal word and symbol.
WARNING
Risk of injury due to disregarding the safety symbols.
Risks exist when disregarding warnings in the operating instructions.
Follow all warnings.
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5.2.1 Mandatory Signs
Observe additional information
Use safety goggles
Wear ear protection
Wear safety shoes
Important note
5.2.2 Warning Signs
Warning of a hazardous area
Warning of hazardous
electrical voltage
Warning of electromagnetic
radiation
Warning of flammable
substances
Warning of explosive
substances
Warning of electrostatically
sensitive components
5.2.3 Prohibition Signs
Unauthorised access is
prohibited
Fire, open flame and smoking
prohibited
Switching prohibited
Prohibition
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5.2.4 Other Signs
Dispose of packaging material
according to regulations
Recycling
5.3 Obligations
5.3.1 Operator´s Obligations
A safety-related condition and use of the device is a requirement for safe operation of the device.
Therefore, the operator has the obligation to ensure that the following points are observed:
The device may only be operated by trained and authorised
personnel!
Have personnel who must be trained, instructed or within
the scope of general training work only on the device under
the supervision of an experienced person!
Have the personnel confirm by their signature that the
operating instructions have been understood!
Precisely establish responsibilities according to the various
task areas (operation, installation)!
Operating personnel must be required to immediately
report any occuring and identifiable safety deficiencies to
their superior!
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5.3.2 Responsibilities of Operating Personnel
The operating personnel is obligated to contribute to the prevention of work accidents and
their consequences by their personal conduct.
WARNING
Risk of injury due to insufficient personnel qualifications
There are dangers to personnel and the proper operation due to
inadequately qualified personnel.
Only trained personnel may operate the unit.
New operating personnel must be instructed by the existing operating
personnel.
The operator must regulate the personnel’s areas of responsibility,
competence, and monitoring precisely.
The personnel for the areas of responsibility mentioned above must have the
corresponding qualification for this work (training, instruction).
If necessary, this can be done by the manufacturer on behalf of the operator.
In case of disregard, all warranty claims are void.
5.3.3 ESD Instructions
CAUTION
Static electricity can damage electronic components in the device. All
persons who install or maintain the device must be trained in ESD protection.
ESD protective measures must be taken when opening the unit.
Disconnect the power supply before removing or adding components!
Observe the basic principles of ESD protection
Take the appropriate ESD precautionary measures
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5.3.4 Residual Risks
Despite all precautionary measures taken, there may still be residual risks that are not
apparent.
Adhering to the safety instructions, the intended use, and the product manual as a whole can
reduce residual risks.
DANGER
Danger Caused by Electrical Current
Electrical residual energy remains in lines, equipment and devices after
shuttingdown the device.
Only qualified electricians may perform work on the electrical supply
system.
ATTENTION
Disconnect the unit from the power supply system if active parts of the
unit can be accessed using tools. Access is only permitted by
authorised personnel.
Regularly check the electrical equipment of the unit. Regularly check all
moving cables for damage within the scope of maintenance and repair
work.
DANGER
Dangers of Fire and Explosion
There is a risk of fire and explosions in the vicinity of the device.
Smoking, exposed flames and fire are strictly prohibited in the vicinity of
the unit. Do not store any flammable liquids within the hazardous area of
the device.
A fire extinguisher must be kept in the vicinity of the device.
WARNING
Warning of Electromagnetic Radiation
Electromagnetic radiation is generated when data is transmitted and
received.
Position the antenna so that it is not in the vicinity of the human body or
touches it during transmission.
The device complies with EN50364:2010 (Human Exposure).
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5.3.5 Supplemental Instructions
Read and understand all safety and operating instructions before
installing and operating the device.
This documentation was written for specifically trained personnel. The
installation, operation and error handling may only be carried out by
specifically trained personnel.
Keep these instructions. Keep this documentation in a location that is
accessible to all personnel involved into the installation, use and error
handling of the device.
Follow all warnings. Follow all warnings given on and in the device as
well as in the documentation.
Install the device only in accordance with the manufacturer´s
instructions.
Use only the accessories and cables from the manufacturer.
Troubleshooting that is not described in this documentation may only be
performed by the manufacturer.
When plugging cable connections, only pull on the plug and not on the
cable.
Never overbend antenna cables or subject them to mechanical forces.
Only use spare parts specified by the manufacturer.
The provisions of the accident-prevention regulations of the government safety organisations
always apply to all work on the device.
Applicable, legally binding accident prevention regulations
Applicable binding regulations at the place of use
Technical standards for safety and professional work
Existing environmental protection regulations
Other applicable regulations
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5.3.6 Regulations and Certifications
The electrical design and documentation comply with the DIN / VDE, EN / IEC regulations.
Functional Description
5.4 Functionality
5.4.1 General Information
The LFP Handheld Reader USB is a radio frequency identification system that uses radio transmission
to read or write data from LF transponders (134.2 kHz).
The core piece is an LF transponder (134.2 kHz) which operates as a forgery-proof electronic tag.
The reading unit of the system transmits an energy pulse via the antenna. The transponder is supplied
with energy by this pulse. The transponder then sends the stored data back to the device.
The reading process takes approx. 100ms (communication between transponder and device).
Since a line of sight between the device and transponder is not absolutely necessary, the transponder
can also be identified through non-metallic material.
The LF Handheld Reader USB reads all 134.2kHz transponders according to ISO18000-2 (and
ISO11785) common on the market.
5.4.2 Normal Operation
During normal operation, the LFP handheld reader is immediately ready for operation after a reset.
It does not perform any independent actions in this mode.
Pressing the read button triggers an automatic reading and, if the reading is successful, the data of the LF
tag are output.
5.4.3 Polling Mode
The reader can be set to a state of continuous reading, the so-called polling mode. The device then
performs a readout at regular intervals and outputs the data of the read LF transponder.
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5.5 Illustration
5.5.1 Membrane Keypad
1. Power LED
2. Antenna LED
3. Status LED
4. Menu Button
5. Set Button
6. Read Button (1)
5.5.2 Rear View
1. Read Button (2)
2. USB Connection Cable
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Description of the Components
Component Description
Power LED
The power LED illuminates when the reader is plugged into a USB
port and indicates operation readiness.
Antenna LED
The antenna LED indicates the execution of an RFID read or write
process.
Status LED
The status LED indicates a successful reading process. In ASCII
protocol mode, this behaviour can be activated or deactivated via
parameters.
Menu Button
Use the menu button to switch the LFP handheld reader to a setup
mode to configure the settings.
Set Button
The set button is used to select parameters in the menu and to
transfer parameter settings.
Read Button (1)
The read button triggers an automatic reading.
The execution of the reading is indicated by the antenna LED, the
result of the reading is indicated by the status LED.
In setup mode, the read button (1) is used to configure the
parameters. The function is identical to read button (2).
USB
Connection Cable
The USB connection cable is fixed to the LFP handheld reader.
The length of the connection cable is adjustable.
Read Button (2)
The function is identical to read button (1).
Antenna
With the integrated antenna, ranges of up to 100mm are possible,
depending on the transponder type.
Signal Buzzer
An internal signal buzzer is provided for acoustic indication of
readings. In both operating modes the buzzer can be activated or
deactivated via parameters.
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5.6 Technical Data
5.6.1 Device Label
The device label is located on the LFP reading device housing.
It contains a CE mark as well as an article and serial number.
1. Designation
2. Articel Number (Variants)
3. Serial Number (Example)
4. MAC address
5. Manufacturer
Technical Data
Connection USB, variable cable length (max. 3m)
Operating Temperature -25 °C bis 50 °C
Storage Temperature -40 °C bis 85 °C
Permissible humidity at
50°C
25 – 80 %
Transmission Frequency 134,2 kHz , ISO18000-2
Reading Range Type 100mm, with 32mm glass transponder
Protection IP 40
Housing Material ABS
Dimensions approx. 185 x 90 x 60 mm
Voltage 5 V (+/- 5%)
Power Consumption Type 80mA / 300mA ( passive / active )
Protocol ASCII, Hex, Keyboard Emulation
LFP USB Handheld Reader
CE
P/N: HRF.R.LFP.0I.YU.10.30A
S/N: 1701HAG00123
HKxxxxxx
HERMOS AG
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5.6.2 Device Label FCC ID 2AP5OLFP
FCC
- The Federal Communications Commission (FCC) warns the users that changes or modifications to
the unit not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
RF exposure statement portable devices)
This device complies with the RF exposure SAR test exclusion requirements for portable devices, if a
minimum separation distance 50mm is kept. However, the device shall be used in such a manner that
the potential for human contact during normal operation is minimized.
- FCC §15.105 (b):
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) this device
may not cause harmful interference, and
(2) this device must accept any
interference received, including
interference that may cause undesired
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6. Installation
Follow the basic safety instructions in the chapter safety instructions.
6.1 Safety Instructions
The device is exclusively designed for indoor use in an industrial
environment.
The device may only be installed indoors with a temperature and humi-
dity level within the range of the specified technical module parameters.
Never use the unit near or in water.
Never pour liquids of any type over the unit. However, if the unit should
still come in contact with liquid, disconnect it and have it checked by a
technician.
Do not install the device near heat sources such as radiators, heat
registers, stoves or other devices (including amplifiers) that generate
heat.
Do not install the device in a flammable environment.
Never expose the device to extreme temperature fluctuations, since
otherwise condensation develops inside the device and causes
damages.
Do not install the device in the vicinity of voltage lines or other power
lines with which they could collide (for example, drilling), which could
result in serious injuries or even death.
The device (especially the antenna) should not be installed in the
immediate vicinity of electrical equipment such as medical devices,
monitors, telephones, TV sets and magnetic disks, and metal objects.
This could result in reduced read and write ranges.
Never use the unit in explosive areas (such as paint warehouses).
Do not use the device in areas where it is exposed to vibrations or
shocks.
The installation location must be adequately illuminated during the
installation.
Never install the unit during a lightning storm.
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Ensure that the installation meets FCC (country specific) requirements
for human exposure to radio frequencies.
6.2 Qualified Installation Personnel
The unit must only be installed by specially trained personnel. If you have
any doubts about the qualifications, please contact the manufacturer.
If the unit is operated by untrained personnel, the reading device and/ or
connected devices may be damaged.
6.3 Unpacking
The LFP reading device and the accessories can be packed customer-dependent under
clean room conditions. In order to maintain this condition, the devices must be unpacked
under clean room conditions.
The packaging material consists of cardboard and foil.
Dispose of these materials separately under the respective regulations
of your country.
6.4 Power Supply
Danger exists if the device is supplied with the wrong voltage.
Only use cables, plugs and adapters from the manufacturer.
Observe the connection values of the technical data.
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6.5 Dimensions
6.6 Connecting the LFP Reader
6.6.1 LFP Reader Operating Mode Keyboard Emulation
The LFP reader with set keyboard emulation can be connected to any USB port of a running PC. The driver
is automatically detected and installed. After a few seconds the operating system of your computer reports
the successful installation and the reader is ready for operation.
The LFP reader with keyboard emulation works like a connected
keyboard. It is displayed as an additional HID keyboard in the
device manager of your system.
6.6.2 LFP Reader Operating Mode ASCII Protocol
The LFP reader with set ASCII protocol can be connected to any USB port of a running PC. Before
connecting the reader, however, the driver for the virtual COM port must be successfully installed so that
the connected device can be addressed via the virtual COM port. The driver is available in the download
area of the RFID products on the HERMOS homepage.
Homepage: www.hermos.com
User Name: Customer_LF
Password: 781692
After downloading and unpacking the driver, the installation is started by running the application
CP210xVCPInstaller_x64.exe or CP210xVCPInstaller_x86.exe.
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When using a single USB reader, select the "SingleReader" driver. The reader can be operated on any
USB port of the PC.
When using several USB readers simultaneously, select the "MultiReader" driver. A virtual serial port is
assigned to each USB port. A reader can be installed on each USB port of the PC.
The USB reader is now connected to a USB interface of the PC, the computer recognizes the device
and automatically starts the driver installation.
Follow the further installation instructions and install the software via "Install the software automatically".
If the automatic installation fails, start the manual installation.
If the driver is successfully installed and the USB reader is plugged in, it can be accessed via the virtual
COM port. In the Device Manager of the Control Panel, the corresponding virtual COM port is displayed as
"Silicon Labs USB to UART Bridge.
6.6.2.1 Parameters of the Serial Interface
Serial communication takes place via a virtual COM port, which has the following unchangeable
communication parameters.
Figure
Baudrate 19200
Data bits
8
Stop bits
Parity
1
Even
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7. Operation
7.1 Operating Personnel
The device should only be operated by specially trained personnel. If
you are in doubt about the required qualification, please contact the
manufacturer.
Operation of the device without the specific expertise can lead to
damage to the device or connected devices.
7.2 Setting the Operating Mode
The LFP reader has 2 different operating modes:
- Keyboard emulation analog keypad
- ASCII protocol communication via virtual COM port
Switch between the two operating modes via the connected membrane keypad:
Press and hold the "Read" key on the membrane keypad
Press the "Menu" key on the membrane keypad and hold it together with the "Read" key for about 10
seconds until all LEDs and the buzzer light up
When the two keys are released, the operating mode is changed and the device is restarted
7.3 Operating Mode Keyboard Emulation
If the device is plugged in or restarted, the Keyboard Emulation operating mode is indicated by the
following combination of LEDs and signal buzzer:
- The antenna LED, the status LED and the buzzer are briefly switched on and off again
(test of the membrane keypad)
- Short waiting time
- The antenna LED, the status LED and the buzzer are briefly switched on and off twice in succession
The LFP reader USB works like a connected keyboard. To read a transponder, place the cursor in a text
document or in a text input field of the active application. Hold the device near a transponder and press the
read button.
An active reading is indicated by the antenna LED lighting up.
The LFP reader reads the transponder and writes the read data via the USB interface into the text
document or input field.
The data format (ASCII or HEX) can be adjusted in the setup mode.
7.3.1 Setup Mode
A setup mode is only available in Keyboard Emulation mode.
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In the setup mode of the LFP reader you can change parameter settings.
To enter the mode, connect the LFP reader to your PC and start any text editor.
Press and hold the menu button on the reader to switch to setup mode and a setup menu appears in the
editor.
The settings in setup mode are made with the read button and the set
button. (See 8.4 State diagram operating modes)
Press and hold the menu key to return the device to operating mode. Exiting the setup mode is indicated by
the output "EXIT".
7.3.2 Parameters
Parameter Name Short Description
Customer Selection of customer settings
Retry Number of read attempts
ShowTagType Show tag type
ReadPage Page of the tag to be read
ReadLength Length of the read data
MIDFormat Formatting the MID
Polling Activate polling mode
AddTabCR Add carriage return or tab
ASCIICoded Output in ASCII or HEX format
Prefix Preceding character before reading result
Suffix Subsequent character after reading result
Language Language setting keyboard
Peep/Summer Switching the signal buzzer on or off
ShowNoneVisibleASCII Display of invisible signs
NumPrefix Number of prefix characters
NumSuffix Number of suffix characters
PollingFrequenz Reading frequency in polling mode
SpecialSettings Configuring Special Settings
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7.3.2.1 Parameters - Customer
The parameter defines whether the reader is configured with the standard settings of the parameters or
with customer-specific settings.
Figures: Standard = 00
Customer Mode 1 = 01
Customer Mode 2 = 02
Standard: 00 (Standard Settings)
Customer Mode Parameter Set 1:
If the reader is in customer mode 1, the following parameters differ from the standard settings:
Parameter ReadPage 00
Parameter AddTabCR add Tab
Parameter Language English
In addition, the setup menu is locked when the reader is in customer mode 1. To access the setup menu,
press the following key combination:
Hold down the menu button and briefly press the read button 3 times. Then release the menu button. You
are now back in the parameter menu.
Customer Mode Parameter Set 2:
If the reader is in customer mode 2, the following parameters differ from the standard settings:
Parameter ReadPage 00
Parameter Prefix 19
Parameter Language English
7.3.2.2 Parameters - Retry
Defines the internal reading repetitions in case of an incorrect reading.
0x00 – 0x1F 0 to 31 Reading repetitions
Standard: 0x00
7.3.2.3 Parameters - ShowTagType
It is possible to display the type of transponder. For this purpose, a number for the transponder type is output
before the actual transponder data. This behaviour can be switched on and off.
on Transponder type is displayed
off Transponder type is not displayed
The transponder types are indicated by the following figures:
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01 - Read Only Transponder
02 - Read/Write Transponder
03 - Multipage Transponder
Standard: off
7.3.2.4 Parameters - ReadPage
This parameter defines the start position (page!) of a read within a multipage transponder.
0x00 – 0x11 Page 1 to page 17
Standard: 0x01
If the value is 0, the different transponder types are read as follows:
Multipage Transponder - only page 1 is read (8 bytes)
Read Only - entire transponder is read (8 bytes)
Read/Write - entire transponder is read (8 bytes)
The transponder types Read Only and Read/Write can only be read with value 0.
7.3.2.5 Parameters - ReadLength
This parameter defines the length of the data (8-byte intervals) to be read during a read. The data of the
17 pages of a multi-page transponder can be read at most. The actual maximum possible number of bytes
to be read is limited by the first page to be read (parameter ReadPage) and is calculated from the
remaining pages.
0x08 – 0x88 read (n*8) bytes, where n = 1..17 (Page)
Standard: 0x08 (Read 8 bytes)
7.3.2.6 Parameters - MIDFormat
This parameter defines the format in which the MID data of the transponder are to be output.
0 : Not formatted; starting with the starting page
1 : MSB first output; starting with the end page; ends with the start page
2 : LSB first output; starting with the end page; ends with the start page
3 : MSB first output; starting with the start page; ending with the end page
4 : LSB first output; starting with the start page; ending with the end page
Standard: 0
Example: Data in transponder:
Data Page 1: - - - - 1234 (hex: 20 20 20 20 31 32 33 34).
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Data Page 2: 56789531 (hex : 35 36 37 38 39 35 33 31).
Output with different formats (StartPage=0, ReadLength=16 bytes):
Format 0: - - - - 123456789531 (Hex: 20 20 20 20 31 32 33 34 35 36 37 38 39 35 33 31).
Format 1: 56789531- - - -1234 (Hex: 35 36 37 38 39 35 33 31 20 20 20 20 31 32 33 34).
Format 2: 135987654321- - - - (Hex: 31 33 35 39 38 37 36 35 34 33 32 31 20 20 20 20).
Format 3: - - - - 123456789531 (Hex: 20 20 20 20 31 32 33 34 35 36 37 38 39 35 33 31).
Format 4: 4321- - - -13598765 (Hex: 34 33 32 31 20 20 20 20 31 33 35 39 38 37 36 35).
7.3.2.7 Parameters - Polling
This parameter defines whether the reader should work in polling mode (continuous reading at intervals of
parameter PollTimer). After the polling mode is activated in the parameter, the user has to press the read
button for the reader to start polling. Press the read button again to stop polling. With each successful
reading, the data is output.
off = 00 Polling off
on = 01 Polling on, activate the poll function with the read button.
on_read = 02 *) Polling on, activate the poll function with the read button.
Polling ends after the first successful reading.
on_reset = 03 *) Polling on, poll function is started automatically after a reset.
Standard: 0x00
*) not implemented in every software version
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7.3.2.8 Parameters - AddTabCR
This parameter defines whether a carriage return, a TAB or both is added to the end of the reading result.
none = 00 Do not add CR or TAB
add CR = 01 Add CR (ASCII 0x0D)
add TAB = 02 Add TAB (ASCII 0x09)
add CR TAB = 03 Add CR and TAB (ASCII 0x0D+0x09)
Standard: 0x01
7.3.2.9 Parameters – ASCII-Coded
The data read out can optionally be output in HEX or ASCII format.
HEX = 00 HEX format
ASCII = 01 ASCII format
Standard: 0x01
7.3.2.10 Parameters - Prefix
This parameter defines whether the output string should be preceded by an additional character.
0x00 – 0x8F HEX code for prefix
Standard: 0x00 (No prefix)
7.3.2.11 Parameters - Suffix
This parameter defines whether an additional character is to be appended to the output string.
0x00 – 0x8F HEX code for suffix
Standard: 0x00 (kein Suffix)
7.3.2.12 Parameters - Language
This parameter defines the keyboard layout.
English = 00 English layout
Germany = 01 German layout
Standard: 0x01
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7.3.2.13 Parameters - Peep/Summer
This parameter activates or deactivates the internal signal buzzer of the reader during the reading process.
off = 00 Buzzer off
on = 01 Buzzer on
Standard: 0x01
7.3.2.14 Parameter - ShowNoneVisibleASCII
This parameter defines whether a non-visible ASCII character on the screen is represented by a □ or not.
This parameter is only relevant for the ASCIICoded "ASCII" setting.
off = 00 □ not indicated
on = 01 □ indicated
Standard: 0x00
7.3.2.15 Parameters - NUMPrefix
Defines the number of prefix characters to be added before the output string.
0x00 – 0x10 Number of prefix characters
Standard: 0x00 (No prefix)
7.3.2.16 Parameters - NUMSuffix
Defines the number of suffix characters to be added after the output string.
0x00 – 0x10 Number of suffix characters
Standard: 0x00 (No suffix)
7.3.2.17 Parameters - Polling Frequency
This parameter may not yet be available in all software versions!
The speed of the polling frequency is defined by this parameter.
0x00 Fastest frequency possible during polling
0x01 – 0x14 Breaks between polls. (Multiplication factor 100ms)
Standard: 0x0A
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7.3.2.18 Parameter - Special Settings
This parameter should make it possible to activate further special functions in the future.
This parameter is addressed bitwise (Bit0 to Bit7).
0x00 Standard behaviour
Standard: 0x00 (Standard behaviour)
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State Diagram Operating Modes
The following status diagram shows the operating modes and the transitions for the keyboard emulation
operating mode.
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7.3.3 Process Diagram
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7.3.4 ASCII - Table
DEZ
HEX
CTRL
Code
DEZ
HEX
CTRL
Code
0
0
^@
NUL
21
15
^U
NAK
1 1
^A
SOH
22 16
^V
SYN
2
2
^B
STX
23
17
^W
ETB
3
3
^C
ETX
24
18
^X
CAN
4
4
^D
EOT
25
19
^Y
EM
5 5
^E
ENQ
26 1A
^Z
SUB
6
6
^F
ACK
27
1B
^[
ESC
7
7
^G
BEL
28
1C
^\
FS
8 8
^H
BS
29 1D
^]
GS
9
9
^I
HT
30
1E
^^
RS
10
A
^J
LF
31
1F
^_
US
11
B
^K
VT
12
C
^L
EF
13
D
^M
CR
14
E
^N
SOH
15
F
^O
SI
16
10
^P
DLE
17
11
^Q
DC1
18 12
^R
DC2
19
13
^S
DC3
20
14
^T
DC4
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DEZ HEX CTRL
DEZ HEX CTRL
32 20
BLANK
56 38
8
33 21
!
57 39
9
34 22
"
58 3A
:
35 23
#
59 3B
;
36 24
$
60 3C
<
37 25
%
61 3D
=
38 26
&
62 3E
>
39 27
'
63 3F
?
40 28
(
64 40
@
41 29
)
65 41
A
42 2A
*
66 42
B
43 2B
+
67 43
C
44 2C
,
68 44
D
45 2D
-
69 45
E
46 2E
.
70 46
F
47 2F
/
71 47
G
48 30
0
72 48
H
49 31
1
73 49
I
50 32
2
74 4A
J
51 33
3
75 4B
K
52 34
4
76 4C
L
53 35
5
77 4D
M
54 36
6
78 4E
N
55 37
7
79 4F
O
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DEZ HEX CTRL
DEZ HEX CTRL
80 50
P
104 68
h
81 51
Q
105 69
i
82 52
R
106 6A
j
83 53
S
107 6B
k
84 54
T
108 6C
l
85 55
U
109 6D
m
86 56
V
110 6E
n
87 57
W
111 6F
o
88 58
X
112 70
p
89 59
Y
113 71
q
90 5A
Z
114 72
r
91 5B
[
115 73
s
92 5C
\
116 74
t
93 5D
]
117 75
u
94 5E
^
118 76
v
95 5F
_
119 77
w
96 60
'
120 78
x
97 61
a
121 79
y
98 62
b
122 7A
z
99 63
c
123 7B
{
100 64
d
124 7C
|
101 65
e
125 7D
}
102 66
f
126 7E
~
103 67
g
127 7F
□
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7.3.5 Control and Function Symbols
HEX Button
HEX Button
0x01 CTRL-A
0x81 F1
0x02 CTRL-B
0x82 F2
0x03 CTRL-C
0x83 F3
0x04 CTRL-D
0x84 F4
0x05 CTRL-E
0x85 F5
0x06 CTRL-F
0x86 F6
0x07 CTRL-G
0x87 F7
0x08 CTRL-H
0x88 F8
0x09 CTRL-I
0x89 F9
0x0A CTRL-J
0x8A F10
0x0B
CTRL-K
0x8B
F11
0x0C CTRL-L
0x8C F12
0x0D CTRL-M
0x0E CTRL-N
0x0F CTRL-O
0x10 CTRL-P
0x11 CTRL-Q
0x12 CTRL-R
0x13 CTRL-S
0x14 CTRL-T
0x15 CTRL-U
0x16 CTRL-V
0x17 CTRL-W
0x18 CTRL-X
0x19 CTRL-Y
0x1A CTRL-Z
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7.4 ASCII Protocol Operating Mode
If the device is plugged in or restarted, the ASCII protocol operating mode is indicated by the following
combination of LEDs and signal buzzers:
- The antenna LED, the status LED and the buzzer are briefly switched on and off again (test of the
membrane keypad).
- Short waiting time
- The antenna LED is switched on and off briefly at least one more time.
The LFP reader USB communicates with a higher-level host system via a virtual COM port using the ASCII
protocol. To read a transponder, hold the device near a transponder and press the read button.
An active reading is indicated by the antenna LED lighting up.
The LFP reader reads the transponder and transmits the read data either via the standard ASC-I1 protocol
or the ASC-W1 protocol. Both protocols are ASCII protocols and differ only slightly in commands and
parameters. The desired ASCII protocol specification is selected via parameter 64. In the following
chapters, the different specifications are indicated at the appropriate points.
7.4.1 Structure of the Communication Protocol
Communication is carried out via ASCII packets.
A specific response is sent to the reader after each command. We recommend waiting for this response
before sending a new command.
7.4.2 Packet Content
Each message packet consists of a packet header (header = 3 characters), the message data (2 or more
characters) and the packet end.
Packet Header
The packet header contains a start character and the message length. The message length consists of 2
hexadecimal bytes and defines the number of characters in a message.
Start Start character (ASCII character „S“)
Length 1 High byte of the message length (ASCII character „0“-“F“)
Length 2 Low byte of the message length (ASCII character „0“-“F“)
Packet Header Message Data Packet End
Packet Header
Start Character Length 1 (high byte) Length 2 (low byte)
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Advanced ASCII format:
The advanced ASCII format is defined for ASCII messages whose message length exceeds 255
characters. The packet header contains two start characters and the message length. The message length
consists of 4 hexadecimal bytes and defines the number of characters in a message.
Start 1 First start character (ASCII character „S“)
Start 2 Second start character (ASCII character "X" = extended ASCII protocol)
Length 1 High byte of the message length (ASCII-character „0“-„F“)
Length 2 Byte packet length (ASCII character „0“-“F“)
Length 3 Byte packet length (ASCII character „0“-“F“)
Length 4 Low byte of the message length (ASCII character „0“-“F“)
Message Data
The message contains a command character, a target or source address and the actual message data.
Command The command is defined by an ASCII character. (See protocol commands)
Address Target/source address (ASCII characters „0“, „1“, …, „E“) *
Data The definition of the message data depends on the protocol command.
* The reader address can be set via parameters. When delivered, the address is set to "0".
Packet End
The packet end contains an end character and a checksum consisting of 4 characters.
End
Character ASCII end character <CR> (hex 0x0D).
Checksum 1 High byte XOR logic of all data (packet header, data and end character).
(ASCII character „0“…“F“)
Checksum 2 Low byte XOR logic of all data (packet header, data and end character).
Packet Header
Start 1 Start 2 Length 1 Length 2 Length 3 Length 4
Message Data
Command Address Data
Packet End
End Character Checksum 1 Checksum 2 Checksum 3 Checksum 4
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(ASCII character „0“…“F“)
Checksum 3 High byte addition of all data (packet header, data and end character).
(ASCII character „0“…“F“)
Checksum 4 Low byte addition of all data (packet header, data and end character).
(ASCII character „0“…“F“)
7.4.3 Data Elements
The data elements that are used by default ASCII messages, which are described in the message
details section, are defined in this section.
Command of the message, see table in Chapter “Commands“.
The data is represented in HEX format by 2 ASCII characters. The data always includes every 8
bytes of the corresponding page of the transporter.
Example:
Transponder data in ASCII-Format „12345678“ (8 bytes)
Transponder data in HEX-Format 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38
Data in message „3132333435363738“ (16 ASCII-characters)
The output index defines the index of the output that is addressed.
1 Signal buzzer
2 Antenna LED
3 Status LED
The data element shows or sets the current status of the outputs.
0 Switch off the output permanently
1 Switch on the output permanently
2 Output flashes with approx. 1 Hz
CMD 1 Byte
Data 16 Bytes
Output Index 1 Byte
Output State 1 Byte
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3 Output remains unchanged
4 Output flashes with approx. 2 Hz
The number of the parameter is displayed as an ASCII character in HEX format.
Example: Parameter 1 "01" (2 ASCII characters: 0x30, 0x31)
Parameter 10 "0A" (2 ASCII characters: 0x30, 0x41)
Parameter 20 "14" (2 ASCII characters: 0x31, 0x34)
In ASC-W1 mode, the data element displays the number of a parameter in hexadecimal format ("0" to
"F") using 1 ASCII character.
Example: Parameter 1 "1" (1 ASCII character: 0x31)
Parameter 15 "F" (1 ASCII character: 0x46)
In the standard ASC-I1 mode, the data element displays the value of a parameter using 2 ASCII
characters (2 bytes) in decimal format (“00” bis “99”).
Example: Value 45 "45" (2 ASCII characters: 0x34, 0x35)
In ASC-W1 mode the data element indicates the value of a parameter by means of 2 ASCII characters
(2 bytes) in hexadecimal format („00“ to „FF“).
Example: Value 45 (decimal) "2D" (2 ASCII characters: 0x32, 0x44)
The reader ID defines the address of the device „0“ to „E“.
Adjustable via parameters.
This feature is not required for the individual device. This code is always „0000“.
Parameter No. 1 Byte
Parameter Value 2 Bytes
Reader-ID 1 Byte
Response-Code 4 Bytes
Page 1 Byte
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The page of the transponder for a read / write operation is defined by 2 ASCII characters (2 bytes) in
decimal format.
Example: Page 1 "01"
Page 10 "10"
Page 17 "17"
If the device is operating in ASC-W1 mode, the page should be interpreted in hexadecimal form:
The page of the transponder for a read / write operation is defined by 2 ASCII characters (2 bytes) in
hexadecimal format.
Example: Page 1 "01" („81“ if page is locked)
Page 10 "0A" („8A“ if page is locked)
Page 17 "11" („91“ if page is locked)
Read/Only "F0"
Read/Write "F1"
Contains the 4-byte long serial number of the device.
The serial number is located on the bottom of the reader's label.
Example: "1707HAG04660" complete serial number
Decimal „04660“ (the last 5 characters of the complete serial number)
Hexadecimal serial number „1234“
The gateway ID is the last two digits and has the value 0x34
The data item contains the software version currently used in the reader.
The version string is displayed with up to 16 characters.
Example: "4C464D3449312E31" hex-String („LFM4I1.1“)
Displays the number of the button as an ASCII character whose status has changed or is being
queried.
Serial Number 4 Bytes
Software Version 16 Bytes
Button No. 1 Byte
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Value „1“ Read button
Value „2“ Set button
Value „3“ Menu button
Displays the current status of the respective button as an ASCII character.
Value „0“ Button is not pressed
Value „1“ Button is pressed
The data element Timeout defines the period of time that elapses until the LEDs are switched off.
The timeout is defined in hexadecimal notation.
When the timeout expires, the LED turns off.
Example: „00“ ... permanently on
„01“ to „FF“ ... 1 s to 255 s timeout
7.4.4 Protocol Commands
Read:
Write:
Button State 1 Byte
Timeout 2 Bytes
Command Description
X Read Data
R Automatic Read
K Polling Read
Command Beschreibung
W Write Data
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Settings:
In- and Output:
Command Description
G Query Parameter
F Query Parameter (Device is operated in ASC-W1 mode)
P Set Parameter
N Reset
e Error Message
E Error message (Device is operated in ASC-W1 mode)
H Heartbeat
V Software Version
L Lock page of a transponder
Command Description
O Set Output
Q Query Output/ Input State
A Sensor event: Sensor removed (device is operated in ASC-W1 mode)
B
Sensor event: Sensor detected (device is operated in ASC-W1 mode)
Sensor event: Change of a sensor status
B Sensor event: Change of a sensor status
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7.4.4.1 X – Read Data
Command X starts reading a transponder.
If there is no transponder within the reading range of the antenna, the reader sends an error message
(error 4 - no transponder).
The data element "Page" can have the following values.
1) „E“ or „F“ in ID, Bit 0…3 of the read ID
In ASC-W1 mode, the data element „page“ can have the following values:
Host LF Reading Device
CMD Reader-ID Page
X 1 Byte 2 Bytes
Value Description
„01“ … „17“ Read page #
„98“
Read multiple pages to the end character or a blank
character 1)
„99“ Read out all transponder data
Value Description ( ASC-W1 Mode )
„01“ … „11“ Read page # of a multipage transponder
„F0“ Read/Only transponder
„F1“ Read/Write transponder
„00“ Read the first page of all transponder types
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LF Reading Device Host
CMD Reader-ID Page Data
x 1 Byte 2 Bytes 16 Bytes
If there is no transponder in the reading range of the antenna, the reader repeats the reading function
several times before an error message is sent. The number of repetitions is defined in parameter 4 (‚r
/ w maxrepeat‘). If reading is still not possible, the reader sends the error message ‚no tag (4)‘ to the
host after the repetitions have been carried out.
No confirmation is expected from the host.
For a multi-page read request (98 or 99), the protocol is retried. At the end of reading, the reader
sends an additional packet.
If the sensor check is activated (parameter 1: readmode), the assignment of the external input is
checked before the initiation of a read process by the host. The reading process is only started if the
sensor is occupied, otherwise the error message ‚no tag (4)‘ is sent.
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7.4.4.2 R – Automatic Read
By assigning the external input, an automatic read operation can be triggered.
The command „R“ sends the read data to the host. The host then has to confirm the message.
Depending on the setting of the reader (parameter 1: readmode), the reader reads the following pages:
Read Mode:
0 Reading the page defined in parameter 2
1 sequential reading of a transponder to the end character
(‚E‘ - end character or ‚F‘ empty) in ID bit 0 ... 3
2 Reading the entire transponder (all pages)
LF Reading Device Host
CMD Reader-ID Page Data
R 1 Byte 2 Bytes 16 Bytes
Host LF Reading Device
CMD Reader-ID
r 1 Byte
When reading several pages (par. 1: readmode „tag“ or „everything“) the command is repeated for
each read page. The last package contains the command ‚R‘ and the reader ID.
The host expects a confirmation of the read data. If there is no confirmation from the host, the
command is repeated. (Par.5: ‚RS232 delay time‘, par.6: ‚RS232 maxrepeat‘).
If a reading is not possible, the reader automatically repeats the reading with the set parameters.
(Par.3: ‚r / w delay time‘, par.4 ‚r / w maxrepeat‘).
If no reading is possible, the reader sends the error message ‚no tag (4)‘ to the host.
The delay time for the presence sensor can be set (parameter 0: ‚sensor delay‘).
An automatic reading is only possible if all messages to be confirmed have been confirmed by the
previous reading or the waiting time (par.6: ‚RS232 repeattime‘) has elapsed after the last transmission.
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7.4.4.3 K – Reading in Polling Mode
If the reader is in polling mode, cyclical readings are performed by the device. The reading frequency in
polling mode is determined by the polling frequency (parameter 39: Polling frequency). The data to be
read and the behaviour in polling mode is determined by further polling parameters (parameters 40 to
43). Polling mode is activated or deactivated via the polling frequency (parameter 39: polling frequency)
and the polling mode (parameter 40: polling mode). The read transponder data is automatically sent to
the host with the command "K".
LF Reading Device Host
CMD Reader-ID Page Data
K 1 Byte 2 Bytes 16 Bytes
Host LF Reading Device
CMD Reader-ID
k 1 Byte
The setting of the polling mode (parameter 40: Polling Mode) determines whether a confirmation is
expected from the host or not. If there is no confirmation expected from the host, the command is
repeated. (Parameter 5: 'RS232 delay time'; Parameter 6: 'RS232 maxrepeat').
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7.4.4.4 W – Write Data
The command W starts writing a defined data area of a transponder.
If there is no transponder in the write range of the antenna, the reader sends an error message
(error 4 - no transponder).
Host LF Reading Device
CMD Reader-ID Page Data
W 1 Byte 2 Bytes 16 Bytes
LF Reading Device Host
CMD Reader-ID
w 1 Byte
If the describing of the tag fails, the reader repeats the writing operation several times before sending
an error message. The number of repetitions is defined in parameter 4 (‚r / w maxrepeat‘). If writing is
still not possible, the reader sends the error message ‚no tag (4)‘ to the host after the repetitions have
been carried out.
If the sensor check is activated (parameter 1: readmode), the assignment of the external input is
checked before the host starts the writing process. The writing process is only started if the sensor is
occupied, otherwise the error message 'no tag (4)' is sent.
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7.4.4.5 G – Query Parameter
With the command „G“ the values of all public parameters of the device can be queried.
Host LF Reading Device
CMD Reader-ID
G 1 Byte
LF Reading Device Host
CMD Reader-ID Parameter No. Parameter Value
g 1 Byte 1 Byte 2 Bytes
The reader sends an individual protocol packet for each available public parameter. After the last
parameter, the reader sends a last packet including the command ‚g‘ and the reader ID.
The values returned for the data item parameter value in the response are decimal values (00-99).
The values for the data item Parameter No. are hexadecimal values (0-F).
7.4.4.6 F – Query Parameter
The command „F“ can be used to query the value of a public parameter of the device.
Host LF Reading Device
CMD Reader-ID Parameter No.
F 1 Byte 2 Bytes
LF Reading Device Host
CMD Reader-ID Parameter No. Parameter Value
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f 1 Byte 2 Bytes 2 Bytes
The reader sends an individual protocol packet for the requested public parameter.
The values returned in the response for the data elements parameter number and parameter value
are each hexadecimal values (00-FF).
In ASC-W1 mode, the following format results for the command F:
Host LF Reading Device
CMD Reader-ID Parameter No.
F 1 Byte 1 Byte
LF Reading Device Host
CMD Reader-ID Parameter No. Parameter Value
f 1 Byte 1 Byte 2 Bytes
The reader sends an individual protocol packet for the requested public parameter.
The values returned in the response for the data elements parameter number and parameter value
are each hexadecimal values (00-FF).
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7.4.4.7 P – Set Parameters
The command „P“ can be used to change the value of individual parameters.
After a parameter has been successfully changed, the reader sends a confirmation message.
Host LF Reading Device
CMD Reader-ID Parameter No. Parameter Value
P 1 Byte 2 Bytes 2 Bytes
LF Reading Device Host
CMD Reader-ID
p 1 Byte
The data elements parameter number and parameter value used in the query are each hexadecimal
values (00-FF).
In ASC-W1 mode, the following format is also supported for the P command:
Host LF Reading Device
CMD Reader-ID Parameter No. Parameter Value
P 1 Byte 1 Byte 2 Bytes
LF Reading Device Host
CMD Reader-ID
p 1 Byte
The data elements parameter number and parameter value used in the query are hexadecimal values
(0-F or 00-FF).
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7.4.4.8 N – Reset
The command “N” performs a reset of the hardware/software of the reader.
After performing the reset operation, the device sends a confirmation message.
Host LF Reading Device
CMD Reader-ID
N 1 Byte
LF Reading Device Host
CMD Reader-ID
n 1 Byte
After a hardware reset, a confirmation („n0“) is sent to the host.
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7.4.4.9 e – Error Message
This message is only available in standard ASC-I1 mode!
If an error occurs the device will send an error message with the respective error code to the host.
LF Reading Device Host
CMD Reader-ID Error ID
e 1 Byte 1 Byte
Further information about error codes and the corresponding corrective measures can be found in the
chapter Error Codes.
7.4.4.10 E – Error Message
This message is only available in ASC-W1 mode!
If an error occurs, the device sends an error message with the corresponding error code to the host.
The host expects a confirmation of the read data. If no confirmation is received from the host, the
command is repeated. (Par. 5: 'RS232 delay time'; Par. 6: 'RS232 maxrepeat').
LF Reading Device Host
CMD Reader-ID Error ID
E 1 Byte 1 Byte
Further information about error codes and the corresponding corrective measures can be found in the
chapter Error Codes.
Host LF Reading Device
CMD Reader-ID
e 1 Byte
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H – Heartbeat
The command „H“ sends a heartbeat request to the reader.
The reader responds with its serial number and a response code.
Host LF Reading Code
CMD Reader-ID
H 1 Byte
LF Reading Device Host
CMD Reader-ID Serial Number Response-Code
h 1 Byte 4 Bytes 4 Bytes
Only with the heartbeat command the address "F" (gateway address!) can also be used for the data
element reader ID. The response code is part of the protocol, but is not used for this device. The
response code is always'0000'.
V – Query Software Version
The command “V” is used to query the software version of the LF reading device.
Host LF Reading Device
CMD Reader-ID
V 1 Byte
LF Reading Device Host
CMD Reader-ID Software Version
v 1 Byte 16 Bytes
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The 8 characters of the software version are represented by 16 ASCII characters. Each character is
described in hex format and transmitted by 2 ASCII characters.
7.4.4.11 L – Lock Data Area
A single page of a multipage transponder can be disabled. The page can still be read, but not rewritten.
The process cannot be reversed.
Host LF Reading Device
CMD Reader-ID Page
L 1 Byte 2 Bytes
LF Reading Device Host
CMD Reader-ID
l 1 Byte
If the lock of the transponder page fails, the reader repeats the procedure several times before an error
message is sent. The number of repetitions is defined in parameter 4 (‚r / w maxrepeat‘). If writing is
still not possible, the reader sends the error message ‚no tag (4)‘ to the host after the repetitions have
been carried out.
If the page was already locked, a positive confirmation will be sent (same as the first block).
If the sensor check is activated (parameter 1 readmode), the assignment of the external input is
checked
before the blocking process is started by the host. The locking process is only started when the
sensor is occupied, otherwise the error message ‚no tag (4)‘ is sent.
Locking a page cannot be reversed.
This page is permanently write protected.
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7.4.4.12 A – Activation Button
This message is only available in ASC-W1 mode!
Sensor event messages can be activated in the "Watch Port" parameter (par. 07).
If this is activated, the reader reports every drop of the read button.
The message must be confirmed by the host.
Host LF Reading Device
CMD Reader-ID
A 1 Byte
LF Reading Device Host
CMD Reader-ID
a 1 Byte
The button event is detected after an adjustable delay time (par. 0 Sensor Delay).
During the delay time, the sensor signal must be stable.
This message is only available in ASC-W1 mode!
All buttons can be deactivated in parameter 1 "Read Mode". The
buttons can also be deactivated individually via parameter 0x1A.
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7.4.4.13 B – Button Activated
This message is only available in ASC-W1 mode!
Sensor event messages can be activated in the "Watch Port" parameter (par. 07).
If this is activated, the reader reports every time the read button is pressed.
The sensor message must be confirmed by the host.
Host LF Reading Device
CMD Reader-ID
B 1 Byte
LF Reading Device Host
CMD Reader-ID
b 1 Byte
This message is only available in ASC-W1 mode!
All buttons can be deactivated in parameter 1 "Read Mode". The
buttons can also be deactivated individually via parameter 0x1A.
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7.4.4.14 B – Button Status Change
This message is only available in standard ASC-I1 mode!
Sensor event messages can be activated in the "Watch Port" parameter (par. 07).
If this is activated, the reader reports every change of a button to the host.
Depending on the setting of the reader, the host must send a confirmation.
Host LF Reading Device
CMD Reader-ID Button No. Button State
B 1 Byte 1 Byte 1 Byte
LF Reading Device Host
CMD Reader-ID Button No.
b 1 Byte 1 Byte
All buttons can be deactivated in parameter 1 "Read Mode". The buttons
can also be deactivated individually via parameter 0x1A.
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7.4.4.15 O – Set Output
The command O can be used to set the state of the outputs.
The status of an output (Signal buzzer or LED) is changed in a message. In the current version, the
value of the data element Head-ID always has the value „1“ for the outputs.
Host LF Reading Device
CMD Reader-ID Head-ID
Output
Index
Output
State
Timeout *
O 1 Byte 1 Byte 1 Byte 1 Byte 2 Bytes
LF Reading Device Host
CMD Reader-ID Head-ID
o 1 Byte 1 Byte
* The specification of a time duration (timeout) is optional.
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7.4.4.16 Q – Querying the Status of the Outputs
The command “Q” can be used to query the current status of all outputs. The status of the outputs is
queried in a message. In the current version, the value of the data element Head-ID always has the
value „1“ for the outputs.
Host LF Reading Device
CMD Reader-ID Head-ID
Q 1 Byte 1 Byte
LF Reading Device Host
CMD Reader-ID Head-ID
Output State
Read Button
Output State
Set Button
Output-State
Menu Button
q 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte
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7.4.5 Parameters
When using the “G” command, only some of the public parameters are
retrieved!
The data element "Parameter No." can have the following values. The following list contains the public
parameters of the ASC-I1 protocol:
No.
(dec)
No.
(hex)
“G“
Comm
and
Suppo
rt
Parameter
Name Description
0 0x00 Yes Sensor Delay
Delay time for the presence sensor.
01 .. 99 (0.1 seconds)
Standard: 10 … (1 second)
1 0x01 Yes Read Mode
Read mode for reading automatically started by
external input.
00 - read only one page
01 - read to end character or empty character2)
02 - read all pages
10 - read only one page with previous sensor Check1)
11 - read to end character/empty character with
previous sensor check 1) 2)
12 - read all pages with previous sensor check1)
99 - Deactivate sensor
1) If sensor check is activated (first byte = 1), the
assignment of the read button is checked before
initiating a read/write operation.
If this is not the case, the "NOTAG" error message is
sent.
2) 'E' or 'F' in ID Bit 0...3 of the read ID
Standard: 00 … ( read only one page )
2 0x02 Yes Read Page
Page for readmode "00".
00 - First page of each transponder
01 .. 17 - Page of a multi-page transponder
Standard: 00 … (read first page)
3 0x03 Yes r/w Repeat Time
Time between two read/write attempts.
01 .. 99 (0,1 s)
Standard: 05 … (0,5 seconds)
4 0x04 Yes r/w Max Repeat
Max. number of read/write attempts.
01 .. 99
Standard: 05
5 0x05 Yes RS232 Repeat
Time
If no confirmation message has been received from
the host, the device waits for this time before sending
a message again.
The number of repetitions is defined in parameter 6
('RS232 max repeat').
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01 .. 99 (0,1 s)
Standard: 45 … (4,5 seconds)
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6 0x06 Yes RS232 Max
Repeat
The reader repeats the message according to the
value of this parameter if the host does not send the
expected confirmation message.
Then an error message is sent.
00 - Endless
01 .. 99 - Number of attempts
Standard: 3
7 0x07 Yes Watch Port
Bit0 (0x01): Activates/ deactivates the event
message to the host that button has been enabled.
Default: 0 (deactivated)
Bit1 (0x02): Activates/ deactivates the event
message to the host that the button has been
pressed.
Default: 0 (deactivated)
Bit2 (0x04): Activates/ deactivates automatic reading
triggered by read button
Default: 1 (activated)
Bit3 (0x08): A confirmation message is expected on
sensor messages A and B.
Default: 1 (confirmation expected)
Bit4 (0x10): A confirmation message is expected on
the message of automatic read R.
Default: 1 (confirmation expected)
Standard: 0x1C
9 0x09 No Transponder
Charging Time
Transponder charging time in milliseconds.
Range: 00-FF
Standard: 32(50ms)
14 0x0E No Sensor Polarity
Polarity of all sensors
00 - Identification
01 - Interruption
Standard: 00
15 0x0F Yes Reader Address
ReaderID (0 ... E)
Standard: 0
18 0x12 No Bounce Time
Button Off
This time defines the bounce time for pressing the
button.
00 .. 255 (0,1 s)
Standard: 0x01 (100ms)
19 0x13 No Bounce Time
Button On
This time defines the bounce time for releasing the
button.
00 .. 255 (0,1 s)
Standard: 0x01 (100ms)
20 0x14 No Button Activity
Bit0 (0x01): Read button is activated/ deactivated
Standard: 1 (activated)
Bit1 (0x02): Set button is activated/ deactivated
Standard: 1 (activated)
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Bit2 (0x04): Menu button is activated/ deactivated
Standard: 1 (activated)
Standard parameter value: 0x07 (all 3 buttons active)
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36 0x24 No LED Setup
Defines the behaviour of the signal buzzer and the
status LED during automatic reading and polling
Bit0 (0x01): If the reading is successful in polling
mode, the buzzer is briefly switched on if the tag is
newly recognized.
Standard: 1 (activated)
Bit1 (0x02): The status LED is briefly switched on
after successful reading in polling mode
Standard: 1 (activated)
Bit2 (0x04): If reading is successful in polling mode,
the buzzer is briefly switched on if the transponder is
already reported.
Standard: 1 (activated)
Bit4 (0x10): The buzzer is briefly switched on after
successful automatic reading
Standard: 1 (activated)
Bit5 (0x20): The status LED is briefly switched on
after successful automatic reading.
Standard: 1 (activated)
Standard Parameter Valuet: 0x3F
38 0x26 No Keyboard Test
The keyboard is subjected to a short self-test during
the reset process. The log type is also displayed.
00 - Keyboard test deactivated
01 - Keyboard test activated
Standard: 0x01
39 0x27 No Polling
Frequency
Time between 2 readings when the device is in polling
mode.
0 Polling deactivated
1..255 Poll time in 100ms cycle
40 0x28 No Polling Mode
Bit0 .. Bit3 (0x00 to 0x0F): The lower 4 nibbles of the
poll mode determine whether a K-message without
data is to be sent with each read attempt if no
transponder was read.
00 - Send K message
01 - no K message
02 - Send K-message only once
Standard: 1 (No K message without data)
Bit4 (0x10): Activates or deactivates polling
Standard: 1 (Polling activated)
Bit6 (0x40): If bit6 is set, a K message is only output
if the tag was read for the first time. If bit 6 is
deleted, a K message is sent with each successful
reading
Standard: 1 (Send K message once)
Bit7 (0x80): Activates or deactivates the acknowledge
of the K message.
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Standard: 1 (Acknowledge expected)
Standard Parameter Value: 0xD1
41 0x29 No Polling Page
Defines the page to be read during polling.
00 - read all transponder types (page 1)
01 ... 17 - the specified page of a multipage
transponder
Standard: 0x00
42 0x2A No Polling Verify
Defines the number of read cycles how often a
transponder must be read until it is considered
recognized. Evaluation of the parameter has not yet
been converted.
01 .. 255
Standard: 0x01
43 0x2B No Polling Fallout
Defines the number of read cycles that a transponder
that has already been read must not be read until it is
considered to have been removed.
01 .. 255
Standard: 0x03
64 0x40 No Customer Mode
This parameter determines the mode in which the
reader is operated. Default parameters are also
created when the customer mode is set.
0x00 - Protocol standard ASC-I1
0x03 - Protocol ASC-W1
0x10 - Keyboard emulation with customer 0 settings
0x11 - Keyboard emulation with customer 1 settings
0x12 - Keyboard emulation with customer 2 settings
Standard: „00“
70 0x46 No Software
Version
This read-only parameter can only be read out and
supplies the complete software version as an ASCII
string.
Standard: „SW_LFSH_1.x_yz“ x and yz are variable
71 0x47 No Serial Number
This read-only parameter can only be read out and
returns the provided 12-digit serial number as an
ASCII string.
Standard: „abcdHAGvwxyz“ abcd and vwxyz are
variable
72 0x48 No Hardware
Version
This read-only parameter can only be read out and
returns the hardware version as an ASCII string.
Standard: „LFS_HLG_RevA“
"A" defines the hardware revision
96 0x60 No Default
Parameter
Depending on the set customer mode (par. 0x40), the
corresponding default values are created via this
parameter. The query of the parameter is provided by
the software fine version.
0x00 - Create default values
Standard: „00“
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For the ASC-W1 mode, the following parameters either have a different meaning or are additional
parameters:
No.
(dec)
No.
(hex) Parameter Name Description
8 0x8 Parameter8
Parameter has no further function.
Range: 00-01
Default: 1
9 0x9 Transponder Charging Time Analog parameter 29 standard ASCI-I1
10 0xA Polling Verify Analog parameter 42 standard ASCI-I1
11 0xB Polling Fallout Analog parameter 43 standard ASCI-I1
12 0xC
Polling Readfactor
Analog parameter 39 standard ASCI-I1
13 0xD Parameter13
Parameter has no further function.
Range: 00-FF
Default: 0
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7.4.6 Message Examples
Calculation of the XOR checksum:
53 XOR 30 XOR 32 XOR 48 XOR 30 XOR 0D = 24 '2' '4'
Calculation of the addition checksum:
53 + 30 + 32 + 48 + 30 + 0D = 13A '3' 'A'
(LSB is used)
ASCII HEX Description
‚S' 53 Start character
‚0‘ 30 High byte message length
‚2‘ 32 Lowbyte message length
‚H‘ 48 Message first character: value
‚0‘ 30 Message second character: destination address
CR 0D End character
‚2‘ 32 Highbyte – Checksum XOR
‚4‘ 34 Lowbyte – Checksum XOR
‚3‘ 33 Highbyte – Checksum Addition
‚A‘ 41 Lowbyte – Checksum Addition
Product Manual
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HERMOS AG
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D-95490 Mistelgau Fax. +49(9279) 991-100
The following examples are based on the standard ASC-I1 protocol:
V – Query Software Version
>> V0
<< v04C46534849312E30
Command V
Reader-ID 1
Software Version '4C46534849312E30‘ ASCII "LFSHI1.0"
X - Read data (Reading from page 1 of the multipage transponder)
>> X001
<< x0013132333435363738
Command X
Reader-ID 1
Page 01
Data '4142434445464748' ASCII "ABCDEFGH"
R – Automatic Reading
<< R1013132333435363738
>> r1
Command R
Reader-ID 1
Page 01
Data '3132333435363738' ASCII "12345678"
W – Write Data (Write Page 17 of the multipage transponder)
>> W0173137333435363738
<< w0
Command W
Reader-ID 0
Page 17 (decimal!!)
Data '3137333435363738' ASCII "12345678"
P – Set Parameter 0x27
<< P0270A
>> p0
Command P
Reader-ID 0
Parameter 27 (2-digit hexadecimal)
Parameter Value 0A (2-digit hexadecimal)
F – Query Parameter 0x27
<< F027
>> f0270A
Command F
Reader-ID 0
Parameter 27 (2-digit hexadecimal)
Product Manual
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HERMOS AG
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K – Polling Reading
<< K0013132333435363738
>> k0
Command K
Reader-ID 0
Page 01
Data '3132333435363738' ASCII "12345678“
7.4.7 Error Codes
ID Name Description Possible Cause Remedial Action
0 none No error none
1 auto fail
Automatic reading is not
possible
Reader still processes previous
read or write requests
Wait until previous request is
completed
2 ext fail
Action started from host
cannot be executed. (e.g.
reading or writing)
Reader still processes previous
read or write requests Wait until previous request is
completed
3 write fail
Data transmission to the
transponder is not possible.
Reader still processes previous
read or write requests
Wait until previous request is
completed
4 no tag No transponder or antenna
installed
Antenna is not connected
correctly
Check antenna connection
Antenna is not tuned Perform antenna tuning
No readable transponder within
the reading range
Move the transponder into the
antenna area. Check the type
and function of the transponder
Antenna / transponders are
misaligned
Check alignment of antenna and
transponder
Antenna is damaged or too
close to metal
Replace antenna, check tuning
Interference field at
transmission frequency
Check the antenna environment
for possible sources of
interference. (monitors, servo
motors,...)
5 invalid unknown parameter or
unknown data
Data sent with a command is
wrong
Check command syntax and data
content
Transmission parameters are
not implemented or out of
range
Check parameter syntax and
value
6 unknown unknown fault none
7 Unconfig
The device is not yet
configured
Incorrect reader address is
transmitted
Check message syntax, check
parameter F "Reader address
8 check Parity and/or checksum error
Wrong baud rate is set
Check the baud rate of the serial
interface (Com-Port)
Transmission error with
serial communication
Check the RS232 cable and
connector, check sources of
interference with RS232
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9 void ackn No valid acknowledgement
(unexpected acknowledge)
Serial communication
is interrupted
Check the RS232 cable and
connector, check sources of
interference with RS232
Ethernet communication
is interrupted
Check Ethernet cable and
connector, check IP address
settings
Double or false
acknowledgement
Check communication settings
on the host
A Locked
Locked side cannot be
written
Page to be written is
permanently write-protected
Check page number to be
written, replace tag with new one
B No ackn
Maximum number of trans-
missions of the message to
be acknowledged has
occurred (RS232
maxrepeat), the terminal did
not confirm within the
specified time frame
Host system does not
acknowledge the message
Check availability of host system,
check RS232 cables and
connectors, check Ethernet
cables and connectors, check IP
address settings
C Bad type Wrong transponder type
An incorrect transponder type
is used (Read only or
Read/Write instead of
Multipage)
Check and replace transponder
type
: Msg len Message too long or too
short or message is not
received completely
Message too long or too short
or message is not received
completely
Message length is longer than
displayed on the length byte
Check message length and
length byte
Messages are displayed
longer than in the length byte
Check message length, check
length byte
Not all characters are trans-
mitted (Intercharacter timeout)
Check message syntax, check
RS232 or Ethernet connection
; Invalid Invalid command Unknown command was sent Check message syntax
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HERMOS AG
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D-95490 Mistelgau Fax. +49(9279) 991-100
8. Service and Troubleshooting
8.1 General Information
Follow the basic safety instructions in the chapter safety
instructions.
The maintenance of the reading device and its components may only be
performed by the manufacturer
Observe the instructions in this section when errors occur. Do not perform any
further troubleshooting measures in addition to the described measures.
In case of doubt concerning errors and handling them, contact the manufacturer.
8.2 Troubleshooting Personnel
Troubleshooting must only be performed by specially trained
personnel.
In case of doubts concerning the necessary qualifications,
contact the manufacturer.
The handling of device errors by untrained personnel as well as
the incorrect handling of the device can result in personal
injuries as well as damages to the reading device and/or
connected devices.
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HERMOS AG
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D-95490 Mistelgau Fax. +49(9279) 991-100
8.3 Safety Instructions
All components of the antenna oscillating circuit carry high
voltage.
Only use spare parts specified by the manufacturer.
Unauthorised substitution of parts can result in fire, electric
shock or other hazards.
Electrostatic charges damage electronic components within the
device.
ESD protective measures must be applied before opening the
device.
Carefully remove the housing covers to prevent damage. Do
not operate the device when the housing is open.
Never short circuit the fuse! This may result in fire or damages
on the device.
Only use fuses specified by the manufacturer.
Product Manual
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HERMOS AG
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8.4 Software Releases
Release Date Version Description
June 2018 LFSHI1.0 Initial release
8.5 Customer Service
HERMOS AG
Track & Trace RFID Division
Gartenstraße 19
D-95490 Mistelgau
Deutschland
Phone +49 (0) 9279 – 991 - 0
Fax +49 (0) 9279 – 991 - 100
E-Mail rfid@hermos.com
Product Manual
Customer Documentation
Version 1.0
LFP Handheld Keyboardemulation 07.06.2018
Page 75 of 75
HERMOS AG
Gartenstrasse 19 Tel. +49(9279) 991-0
D-95490 Mistelgau Fax. +49(9279) 991-100
9. Disassembly and Storage
9.1 Disassembly
To disassemble, remove the cable from the USB port.
9.2 Storage
Store the reading device and its components in a clean and dry environment.
Make sure that the power supply has been removed.
Observe the required storage conditions specified in the technical data.
10. Transport and Disposal
10.1 Transport
Use a solid cardboard box for the transport.
Use enough cushioning material to protect the device on all sides.
10.2 Disposal
The device and its components are made of various materials.
Disconnect the electronic components from the housing and attachments and dispose of them separately.
Do not dispose of the unit in normal domestic waste.
Dispose of the materials separately and according to the legal
regulations of your country.
Housing and attachments as plastic waste
Electronic components, antennas and cables as electronic waste