Telenetics Miu Dial Or Leased Line Modem With Rs 485 Users Manual (0049 0002 010A)

MIU Dial or Leased Line modem with RS-485 to the manual a2b94960-1445-4935-b393-d5b21f05f920

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Installation, Operation and Diagnostics
for your

Communication Interface Unit

MIU(Dial or Lease Line modem with) / 485 (RS485) ~
See MIUXXX for modem Technical Data

Edition: June 17, 2003
P/N: 0049-0002-010 rev A

TABLE of CONTENTS

1.PRODUCT OVERVIEW......................................................................... Page 1
2.PRODUCT DESCRIPTION.................................................................... Page 1
3 SERIAL CONNECTOR SPECIFICATIONS ............................................. Page 2
4.POWER SUPPLY SPECIFICATIONS ..................................................... Page 4
5.RS485 SPECIFICATIONS ..................................................................... Page 5
6.ENVIRONMENTAL SPECIFICATIONS.................................................. Page 6
7.APPROVALS ........................................................................................ Page 6
DRAWING - STANDALONE MODEMS .................................................. Sheet 1
MIU/485 CONFIGURATIONS .......................................... Sheet 2

APPENDIX A: CONNECTOR PIN DEFINITIONS...................................... Page A-1
APPENDIX B:SETUP CONFIGURATION.................................................. Page B-1
APPENDIX C:DIAGNOSTICS .................................................................. Page C-1

Installation, Operation & Diagnostics
RS485 (0049-0002-010A)

Edition: June 17, 2003Install Op and Diags for MIU Modems and

1. PRODUCT OVERVIEW
The CIU (MIU\XXX485) is an industrial modem with an RS-232 to RS485 converter module for
direct connection to industrial RS485 Interface units. Though similar to commercial modems, the
MIUXXX\485 contains special features that make it particularly well suited for industrial
applications. (MIUXXX is for any dial or lease line modems such as MIU14.4L)
These capabilities include:
Environment The CIU has been designed explicitly for use in industrial environments.
In addition to an extended temperature range (-40 to +85o C), the
MIUXXX\485 includes surge, shock, vibration, and safety parameters
superior to those of conventional commercial modems.
Industrial

The CIU uses standard industrial connectors for RS485 data and RS232
interfaces.
These connectors allow reliable interconnect to other
industrial components. Furthermore, the CIU data lines are provided at
RS-232 and RS485 signal levels for both stand-alone and embedded
applications.

2. PRODUCT DESCRIPTION
The CIU provides Dial telephone communication capabilities for the industrial
environment. It can be operated stand-alone or as a component of a larger industrial
system.
2.1 Telephone Interface
The CIU telephone interface operates over two wire lines available in North America. The
telephone line interface is environmentally benign, allowing use in Class I, Division 2
applications.
2.2 Data Interface
The CIU data interface provides RS-232 compatible serial signaling. The data interface
interconnects to industrial controllers at RS-232E, RS422 or RS485 data interface are
available as options.
2.3 Power
The MIU accepts either regulated 48.0 to 220 volts DC, or regulated 48.0 to 220 volt AC
power inputs. Unregulated 12.0 to 24.0 volt DC power input is available as an option.
2.4 Mechanical
The CIU consists of two printed circuit boards: A single two sided baseboard and a
RS485 module is a single two sided package 5-3/8 x 4 x 1-3/8 suitable for desktop or wall
mounting.
2.5 Surge
The MIUXXX\485 has double the surge protection of IEC801-4 voltage
requirements.
(5KVac)

Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)

Page 1 of 16

3. MIU'S LED, SWITCH & SERIAL CONNECTOR SPECIFICATIONS
The CIU/485 communicates with industrial controllers through RS-485 compatible serial
signaling. The RS-485 signal levels are used to interconnect with RS-485 compatible
embedded controllers. The RS-232E signal levels are used to configure the CIU. The RS232E signal levels are also used to interconnect with RS-232E compatible embedded
controllers if required.
The RS-232E is present on DB9(MIU), RS485 signal levels are available via four pins'
connectors.
4.1 The following lists the CIU/485 serial interfaces. All connector definitions are
described in Appendix A
RS-232 Configuration Connector (P2)
Connector Type:
Signal Levels:

DB9, (MIU) female, straight board mounts.
RS-232

RS485 Configuration Connector (P1)
Connector Type:
Signal Levels:

4 pin terminal header with .138 spacing
RS485

3.2 MIU/485 LED
LED Blinks every 4 seconds with AC / DC power
3.3 MIU/485 LED & Switch 1 (internal)
S1-1 Closed (ON) LED Blinks with option CD (&C1 AT command) active
S1-2 Closed (ON) LED Blinks AC. DC Power ON Note select either 1 or 2
S1-3 Closed, option modem DTR select DB9 DTR
S1-4 Closed, option modem DTR select modem's CD
3.4 MIU/485 Switch S3 (external)
S3-2 Closed (ON) only for MIU/485 (J1) modem configuration or for
RS232 embedded controllers.
S3-1,-3 &-4 Open (OFF)
S3-1 Closed (ON) only for MIU/485 (P1) RS485 connector (RS485
embedded controllers)
S3-2,-3 &m-4 Open (OFF)
3.5 MIU/485 A switch (external)
SA-1 Closed (ON) RS485 received data disable TX (Driver Output Enable)
SA-2 Closed (ON) RS485 transmit data enable TX (Driver Output Enable) + 5ms
SA-3 Closed (ON) RS485 RTS enable TX (Driver Output Enable) should be
Open (OFF)
SA-4 Closed (ON) RS485 received data is disables with TXD

Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)

Page 2 of 16

3.5 MIU/485 B switch (external)
SB-1 Closed (ON) RS485 Received RX & /RX DC terminated with SB-2 Closed
SB-1 Open (OFF) RS485 Received RX & /RX AC terminated with SB-2 Closed
SB- 2 Closed (ON) RS485 Received RX & /RX terminated
SB- 2 Open (OFF) RS485 Received RX & /RX high impedance (Z)
SB-3 & 4 Closed (ON)
2- wire configuration or loopback mode
SB-3 & 4 Open (OFF)
4- wire configuration

Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)

Page 3 of 16

4. POWER SUPPLY SPECIFICATIONS

The MIUXXX/485 contains a low quiescent power regulator. TheMIUXXX/485 also has
a "low power" standby mode which minimizes overall power requirements when the
MIUXXX/485 is used intermittently.
4.1 Power Supply Selection (MIU) The power supply is selected through the use of
a 3-pin screw - type terminal connector.
Power Connector P3 (MIU)
Connector Type:

3 Pin screw- type terminal

Regulated Powe r Supply Range: 48.0 to 220 Volts AC/DC.
Standby Supply Currents:
200uA
Active Supply Currents:
8mA to 40mA plus modem current
In-Rush Current:
< 250mA
Reverse Protection Method:
Full wave Bridge Rectifier
Over-Voltage Clamp limits:
Zener diode
Regulated Power Supply Range: (12 - 24VDC) is available as an option
Standby Supply Currents:
200uA
Active Supply Currents:
35mA to 295mA plus modem current
In-Rush Current:
< 350mA
Reverse Protection Method:
Full Wave Bridge Rectifier
Over- Voltage Clamp limits:
Zener diode and TransZorb TVS

Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)

Page 4 of 16

5.

RS485 SPECIFICATIONS

MIUXXXX/485 are low-power Transceiver for RS485 and RS422 communication
Features: Point to Point or Multidrop/Multipolling
Full or Half Duplex
Drivers are short - circuit current limited & protected against excessive
power
dissipation (shutdown will places the drivers in a high - impedance state).
When Drivers are disabled (by TXD), drivers will switch to high
impedance
state.
Note in two-wire or multi-drop/multi-polling networks TX enable by TXD
should be active
Receiver input impedance is 12K ohms.
Reduced slew- rate drivers that minimize EMI and reduce reflections
caused
by improperly terminated cables
This will allow error - free
transmitted
data up to 200Kbps
RS485/RS422 standard covers line lengths up to 4000 feet. For line
lengths
greater than 4000 feet a line repeater can be added.
MIUXXXX/485 can drive 4000 feet of 26AWG twisted - pair cable at
200k bps into 120 ohms load.

the

To minimize reflections, the line should be terminated at both ends. In
multi - polling/multi - drop environments (up to 32 drops) all drops off
main cable should be as short as possible.
Only the Master/Host unit and the end of cable unit should be terminated.
Typical Speed versus Distance - (4-wire point to point 26 AWG twisted

cable)

SPEED

DISTANCE

1200bps

6.0 miles(9.6 km)

2400 bps

4.5 miles (7.2 km)

4800 bps

4.0 miles (5.5 km)

9600 bps

2.5 miles (4.0 km)

19,200 bps

1.8 miles (2.9 km)

38,400 bps

1.4 miles (2.1 km)

56,400 bps

1.1 miles (1.8 km)

115,000 bps

0.6 miles (0.9 km)

NOTE: Speed and distances will depend on actual operating
environment.

6. ENVIRONMENTAL SPECIFICATIONS
The CIU/485 (MIUXXX\485) meets the following environmental specifications.

Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)

Page 5 of 16

Operating Temperatures

-40 to 85o C

Storage Temperature

-55 to 100o C

Relative Humidity

0 to 95% is non-condensing.

Altitude

20,000 ft (operating), 40,000 ft (shipping).

Vibration Effect

Withstand 10 to 500 Hz at 1 g on any axis per SAMA
PMC-31-1 without damage or impairment.

ESD susceptibility

Field connected circuits meet the requirements of IEC
801-2 for ESD withstand capability up to 10 KV.

EMI susceptibility

Withstand 27 to 1000 MHz per IEC 801-3 level 1 (1v/m)
without damage or impairment.

EMI radiation

Meets FCC Rules Part J, Subpart 15, Class A for
radiated emissions.

7. APPROVALS
The CIU/485 meets the following approvals:
Telephone:

FCC Part 68

Emissions

FCC Part 15

Environment

UL listed (pending) for use in Class I, Division 2,
Groups C and D hazardous locations.

Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)

Page 6 of 16

MIUXXX\485

Power Connection

Power Connector
RJ11 Leased Line Port

Power In MIU (48 to 220VAC/DC
(AC or DC)
non-polarized
Earth Gnd
Power In MIU-LV (9 to 36VDC)
Positive Voltage In
Power Ground

Earth Gnd
LED 1
Earth/Digital Ground (Jump pins if req’d)
DB9 Data Port

LED ONE
♦Blinking = POWER ON
Steady = MODEM CONNECTED (CD)

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

SHEET TWO

RJ11 Telco Port *
Power Connector

(* Not on MIU232/485 Converter)
B A
LED 1 *
Earth/Digital Ground (Jump pins if req’d) *
RS485
Connection

TX+ TX- RX+ RX-

RS232 Data Port (DB9 female)
for modem configuration only.

3 & 4 always UP.
1 UP, 2 DOWN when using DB9
for modem configuration.
1 DOWN, 2 UP ~ Modem
connected to RS485. Do not
connect data to DB9

LED 1...
♦ Blinking = POWER ON
♦ Steady = MODEM CONNECTED (CD)

B

4 3 2 1
B

4 3 2

1

Point-to-Point, 4-Wire: Set Switches B-3 & B-4 DOWN(OFF)
Point-to-Point, 2-Wire: Set Switches B-3 & B-4 UP(ON)
Line Terminate DC : Set Switches B-1 & B-2 UP(ON)
Line Terminate AC : set Switches B-2
UP(ON)

A

For LoopBack Test mode : Set Switches B-3 & B-4 UP(ON)
Set Switch A-4 DOWN(OFF)

A

Multi-drop (Host), 4-Wire: Set Switches B-3 & B-4 DOWN
Multi-drop (Host), 2-Wire: Set Switches B-3 & B-4 UP

4 3

2 1

4 3 2 1
Multi-drop (Slave), 4-Wire: Set Switches B-3 & B-4 DOWN
Multi-drop (Slave), 2-Wire: Set Switches B-3 & B-4 UP

B

4 3 2 1

A

4 3 2 1

Line Terminate

Switch A-1:
Switch A-2:
Switch A-3:
Switch A-4:

: Set Switches B-2 & B-1DOWN (OFF) for
all Slaves except UP(ON) on unit furthest
from the Host

RTS/CTS Delay: UP = 0 sec; DOWN = 7ms
DOWN = TXD enables TX +5ms
Select only A-2 or
DOWN = RTS enables TX
A-3
UP(ON) = TX clamps RXD off (ON) in 2-Wire (half duplex) mode

MIUXXX/485 DIP SWITCH SETUP

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

SHEET TWO

APPENDIX A. CONNECTOR PIN DEFINITIONS

CONNECTOR
DCD
RD
TD
DTR
GND
DSR
RTS
CTS
RI
PGND

P2:

RS-232 Configuration Connector (DB9) MIU
1
2
3
4
5

7
8
9
shield

data carrier detect
receive data
transmit data
data terminal ready
ground
6
data set ready
request to send
clear to send
ring indication
protective ground

from
to
to

MIUXXX\485
from MIUXXX\485
MIUXXX\485
MIUXXX\485

from
to
from
from

MIUXXX\485
MIUXXX\485
MIUXXX\485
MIUXXX\485

_______________________________________________________________________________

CONNECTOR
spacing

P1:

RS-485 Configuration Connector 4 Positions header with .138
Interface to 4 positions Plug -in Terminal Block

TXY
TXZ
RX
/RX

1
3
4

transmit data (+)
2
transmit data (-)
receive data (+)
receive data (-)

from MIUXXX\485 module
from MIUXXX\485 module
to MIUXXX\485 module
to MIUXXX/485 module

MIUXXX/485 Installation, Operation & Diagnostics Edition: June 17, 2003

Page A-1

APPENDIX B. SETUP CONFIGURATION

In order to configure the MIUXXX/485 to remote RTU, Meter or Scada terminals the
following setup is required for 2w or 4w (RS485) networks
See Fig ONE for MIUXXXX/485 layout and dip switch setting
Jumper 7
Pin 1
3&4

Switch
Three
Switch Three Setting
SW - One On
SW - Two Off
SW - Three Off
SW - Four Off

RS485 Module

Power
Plug

RJ11
Telco

DB9 (RS232)
Configuration
only

Switch
One
Switch One Setting
SW - One Off
SW - Two On
SW - Three Off
SW - Four Off

J2 Pin1
Jumper
3&4
5&6
7&8
13 & 15

J8
Pin 1
2&3

DB 9 Connection
1 Carrier Detect
2 Received Data
3 Transmit Data
4 DTR
5 Signal Ground
6 DSR
7 RTS
8 CTS
9 Ring Indicator

Final Factory Configuration (MIUXXXX/485) for PEXXX modem module
No, Power saving modes, No Auto Reset mode
Switch two ON Switch one, three and four are OFF.
MIU S3 (external)
SW-2

Closed (ON) MIU is configured for DB9 interface to
Modem interface connection.
SW-1, -3 & -4 Open (OFF)

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1

1:AT Command (MIU2400/485) (Dial) configuration is:
ATE0Q1&C1&D0S0=1&W0
E0
Echo Command disables (no "AT" response to terminal)
Q1
Result Codes disable (no result codes return to terminal ring)
S0=1 Auto Answer active (first ring modem will go OFF- Hook and
start answer sequence)
&C1 Carrier Detect is always True (MIU LED will be ON all the
time when Carrier Detect is ON.
&D0 DTR is ignored

2:

AT Command (MIU2496/485, MIU14.4/485 & MIU28.8/485)
ATE0Q1&C1&D0&Q6S0=1&W0
E0
Echo Command disables (no "AT" response to terminal)
Q1
Result Codes disable (no result codes return to terminal ring,
Connect XXX)
&Q6 Normal mode (speed buffering)
S0=1 Auto Answer active (first ring modem will go
OFF- Hook
and start answer sequence)
&C1 Carrier Detect is always True (MIU LED will be ON all the
time when Carrier Detect is ON.
&D0 DTR is ignored
&K0 No flow control

3:

AT Command (MIU14.4L/485) Lease Line
ATE0Q1&C1&D0&K0&Q6\M0\H1&Z3=XX&W0
Recycle power (OFF ON)
Wait 5 seconds for DSR to switch ON
Enter AT\S1 
AT&W0 
Within 45 seconds
E0
Echo Command disables (no "AT" response to terminal)
Q1
Result Codes disable (no result codes return to terminal ring,
Connect XXX)
&Q6 Normal mode (speed buffering)
\M0 Answer mode (for Remote (Slave unit) local (Master) set for
originate \M1
\H1
Lease Line mode

\S1

Security mode (if remote RTU is a dumb unit - TxD is always ON

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1

&Z3=XX Password to exit security mode
&C1 Carrier Detect is always True (MIU LED will be ON all the time
when Carrier Detect is ON.
&D0 DTR is ignored
&K0 No flow control
4:

AT Command (MIU9.6L/485) Lease Line
ATE0Q1&C1&D0&K0&Q6\M0\H1W0
E0
Echo Command disables (no "AT" response to terminal)
Q1
Result Codes disable (no result codes return to terminal ring,
Connect (XXX)
&Q6 Normal mode (speed buffering)
\M0 Answer mode (for Remote (Slave)unit) local (Master) set for
originate \M1
\H1
Lease Line mode
\S1
Security mode (Not available for MIU9.6L)
&C1

Carrier Detect is always true (MIU LED will be ON all the time when
Carrier Detect is ON.
&D0 DTR is ignored
&K0 No flow control
Note &Q5 error detection and data compression can be used
If the host software will support EC
Switch Setting (MIUXXX/485)

(Typical)

MIU S3 (external)
SW-1 Closed (ON) MIU is configured for RS485 Module (RS485 RxD
(Output) to Modem TxD (input))
SW-2, -3 & -4 Open (OFF)
2- Wire Configuration on PE485 module
SB-1 Closed (ON) DC Termination Open (OFF) AC Termination
SB-2 Closed (ON) Line Termination
SB-3 & -4 Closed (ON) 2- Wire
SA- 1
SA- 2
SA- 3
SA- 4

Open (OFF)
Closed (ON) TxD (transmit data) enables TX (Driver Output Enable) + 5ms
Open (OFF)
Closed (ON) Received data is disable with TX
enable (TxD)

4- Wire Configuration for PE485 module

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1

SB-1
Closed(ON) DC Terminated
SB-2
Closed (ON) Line Termination
SB-3 & -4 Open (OFF) 4- wire
SA-1 Open (OFF) RTS follows CTS no delay
SA-2
Open (OFF)
SA-3
Closed (ON) RTS (always ON by MIU internal J7 (1/2)
setting) enables TxEN)
SA-4
Open (OFF) TxD will not disable RxD
MIU S3 (external)
SW-1 Closed (ON) MIU is configured for RS485 Module (RS485 RxD
(Output) to Modem TxD (input))
SW-2, -3 & -4 Open (OFF)
SA2 & SA3 can be configures for TxD enable TxEn signal if there
are several master locations in the network.
SA2 is Closed (ON) TxD (transmit data) enables TX (Driver Output
+ 5ms
SA3 is Open (OFF) TxD will not disable RxD

Enable)

MIUXXXX/485 Final Connection
Ensure that MIUXXXX/485 J7 (internal jumper) 1/2 is connected

APPENDIX C. CONNECTOR DIAGOSTICS
RS485 CONNECTION FAILURE

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1

To test RS485 module set switch SB-3 & -4 Closed (ON) to loopback data to the host
modem. This test is for RS485 2- wire and 4- wire configurations.
Connect MIUXXXX/485 TXY (+) and TXZ (-) to the embedded controller
RS485

DIAGNOSTICS
RS485

CONNECTION FAILURE
To test RS485 module set switch SB-3 & -4 Closed (ON) to loopback data to the host
modem. This test is for RS485 2- wire and 4- wire configurations.
Connect MIUXXXX/485 TXY (+) and TXZ (-) to the embedded
controller RS485 connection

MIUXXXX/485 + ------------------- + RS485 embedded controller
- ------------------- In some applications RS485 TXY (+) and TXZ (-) may have to be connected
to RS485
embedded controller in the following setup
MIUXXX/485

+ ----------------- - RS485 embedded controller
- ----------------- +

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1



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File Type Extension             : pdf
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PDF Version                     : 1.4
Linearized                      : No
Create Date                     : 2003:06:17 09:03:40Z
Modify Date                     : 2003:06:24 00:49:19-07:00
Page Count                      : 16
Creation Date                   : 2003:06:17 09:03:40Z
Author                          : Marc Fishel, High-Tech Publications, www.htpubs.com
Producer                        : Acrobat PDFWriter 4.0 for Windows
Mod Date                        : 2003:06:24 00:49:19-07:00
Metadata Date                   : 2003:06:24 00:49:19-07:00
Creator                         : Marc Fishel, High-Tech Publications, www.htpubs.com
Title                           : MIU Dial or Leased Line modem with RS-485 (0049-0002-010A)

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