Contents
Users Manual 3
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| Document ID | 264919 |
| Application ID | olTlcaAGJ8RLK72sBR84Mg== |
| Document Description | Users Manual 3 |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 71.71kB (896394 bits) |
| Date Submitted | 2002-08-21 00:00:00 |
| Date Available | 2002-08-21 00:00:00 |
| Creation Date | 2002-01-27 15:19:58 |
| Producing Software | Corel PDF Engine Version 9.397 |
| Document Lastmod | 2002-06-16 14:01:33 |
| Document Title | ch6.cdr |
| Document Creator | CorelDRAW Version 9.397 |
| Document Author: | roni |
Chapter 6 RS 485/232 Communication Protocol 6 RS 485/232 Communication Protocol 6.1. RS- 485/232 Communication Protocol: General Description Communication between the Local Site Controller LSC and the STAR READER is based on the master/slave approach. The LSC is the MASTER unit, the READERS are the SLAVE units. The LSC and the READERS communicate via a RS-485 multi drop or RS-232 connection. Each READER has its own address, enabling the LSC to approach each reader individually. 6.2. Physical Layer 6.2.1. Down-link Down-link is the link from the LSC to the READERS. The link is RS-485 or RS-232 half duplex. Data rate can be one of the following: 2400, 4800, 9600, 19200, 38400 BPS. The default rate is set at 9600 BPS. 6.2.2. Up-link Up-link is the link from the READERS to the LSC. The link is RS-485 or RS-232 half duplex. Data rate can be one of the following: 2400, 4800, 9600, 19200, 38400 BPS. The default rate is set at 9600 BPS. 6.3. Protocol Flow. Communication is initiated by a command sent by the LSC to the READER. The READER executes the command and responds accordingly. In a long command session, the session is concluded when the LSC acknowledges the READER within TACK = 50 msec. If the READERS are in sleep mode, the LSC must ensure they are awakened prior to the initialization of the session. In this case, the LSC should wait Tw = 50 msec before sending the main command. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 116 6 RS 485/232 Communication Protocol There are 2 types of commands: SHORT COMMANDS and LONG COMMANDS. Short Commands: Long Commands: These are commands that are relevant to internal tasks at the reader level. These commands involve sessions with seals. The READER will respond to commands generated by the LSC within TRLSC seconds. For short commands, response time should be: TRLSC = 50 msec. For long commands, the LSC should return to retrieve the results after Tsession with the appropriate GET RESULTS command. Tsession is a derivative of the type of command executed to the seals. Acknowledge can be positive or negative. If the LSC detects a problem, Acknowledge will be negative. The READERS are designed to work in cycles. Following an internal or external trigger, a READER SESSION is generated. This is a full communication cycle going back and forth between a READER and the tags located in the READER's receiving zone. The LSC operates differently The READERs are scanned on a different time line, using the same frequency as that of the READER's cycles or greater. This protocol supports RS-485 and RS-232 communication fashions. When working with the LSC using RS-232 communication opposite only one device, address fields should be set to 0xFFFF. When using RS-485 communication in broadcast situations, the address field should be set to 0x0000. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 117 6 RS 485/232 Communication Protocol Short Commands Mode: Long Commands Mode: Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 118 6 RS 485/232 Communication Protocol 6.4. String Formats. 6.4.1. LSC to READERS messages. Commands & Acknowledge strings: CRC STX #B R# CMND data CRC ETX # of bytes #B Where: STX #B R# CMND DATA CRC ETX This is the marker for the beginning of the messages. STX = 02 hex. String length, the string contains the R#,CMND, the DATA field, and the CRC. This session's READER address . This session's command code . The data field contains the data required to execute the command This is the cyclic redundancy check for DATA and fields #B, R#, CMND. This is the marker for the end of the messages. ETX = 03 hex. 6.4.1.1. CRC Calculation. CRC calculations are based on the following CCITT polynomial: 16 12 X +X +X +1 The result is 2 bytes. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 119 6 RS 485/232 Communication Protocol 6.4.1.2. CMND Field Structure. The command field is divided into several sections: Where: DIR PK ERR CT CC Denotes string direction. In case of a command from the LSC to the reader, it is equal to 0. Denotes whether the command transmitted is composed of packets or not. PK = 0 is for non-packet commands. PK = 1 is for packet commands. this flag indicates an error. ERR = 0 no error. ERR = 1 Error. The first byte in the data field is the error code. Is the scenario command type. It describes the command type, and whether it is in short or long form 00000 designates SHORT commands that stream from the LCR to the Reader for MCU purposes. 00011 is for LONG commands. This is the command code . Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 120 6 RS 485/232 Communication Protocol 6.4.2. Reader to LSC Message Response & Acknowledge strings: STX #B R# MSGT MC R_status DATA CRC ETX This is the marker for the beginning of the messages. STX=02 hex. String length, the string contains the R#, MSGT, MC, R_status, the DATA field and the CRC. This is the address of the READER for the current session. This is the message type response for the current session. The MSGT corresponds to a specific command (see paragraph 6.4.2.1) This is the message code (see paragraph 5.2) This is the status field of the reader. The field contains bytes A&B (see paragraph 6.4.2.2) The data field contains the relevant response data. This is the cyclic redundancy check for fields #B, MSGT, R_status and DATA. This is the marker for the end of the messages. ETX=03 hex. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 121 6 RS 485/232 Communication Protocol 6.4.2.1. MSGT Field Structure. The Message Type field is divided into several sections: Where: DIR PK Is the string direction.Response will be 1. Denotes whether the transmitted message is composed of packets. A response of 1 indicates that the message is composed of packets. If the response is 0, the message was transmitted without packets. (If PK=0 there must be 1 reserved data byte). ERR This flag indicates an error. ERR = 0 no error. ERR = 1 Error. The first byte in the data field stores the error code. MT This code reflects the nature of the response. A regular response to a command has the same value as the CC (See paragraph 6.4.1.2). MC This field holds the same value as the Command Code of the related commands. This field makes it possible to link the response to the appropriate command. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 122 6 RS 485/232 Communication Protocol 6.4.2.2. R_Status Field Structure The READER's STATUS field is 4 bytes. Byte A Byte B Byte C Byte D Byte A represents the status of the main motherboard MCU. The other bytes represent the RF modems' status. In a general Reader response the R-Status reply contains bytes A&B only. In a GET Status command, the reply contains all the R-Status bytes. Byte A: LCK Where: LCK 485 PCR PER VCCERR VBERR PMC EDC If the response shows 0, the READER's parameters are locked. If the response is 1, the READER's parameters are unlocked. If the response is 0, the READER is using RS-232 mode for communication. 485 If the response shows 1, the READER is using RS-485 mode for communication. PCR If the response shows 0, the parameters in the MCU's E2ROM are OK. If the reponse is 1, parameters were corrupted and successfully restored. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 123 6 RS 485/232 Communication Protocol PER If the response is 0, the parameters in the MCU's E2ROM are OK. If the answer is 1, parameters are corrupted. VCCERR If response is 0, internal power is OK. If response is 1, internal power is faulty. VBERR If response shows 0, internal battery is OK. If response is1, internal battery is faulty. PMC If response is 0, program memory in the MCU is OK. If response is 1, program memory is corrupted. EDC This flag indicates that a delayed command was triggered and is in process. Byte B: Ch1 Ch2 Ch3 Ch4 Ch1err Ch2err Ch3err Ch4err Where: Ch1 Ch2 Ch3 Ch4 if 0 channel1 is not in use. If 1 channel1 is in use. Iif 0 channel2 is not in use. If 1 channel2 is in use. If 0 channel3 is not in use. If 1 channel3 is in use. If 0 channel4 is not in use. If 1 channel4 is in use. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 124 6 RS 485/232 Communication Protocol Ch1err Ch2err Ch3err Ch4err If 0, channel is OK If 1, channel is defective, details are in byte C. If byte C flags are OK, there is a communication failure with this channel.I If 0, channe2 is OK. If 1, channe2 is defective, details are in byte C. If byte C flags are OK, there is a communication failure with this channel. If 0, channe3 is OK. If 1, channe3 is defective, details are in byte D. If byte D flags are OK, there is a communication failure with this channel. If 0, channe4 is OK. If 1, channe4 is defective, details are in byte D. If byte D flags are OK, there is a communication failure with this channel. Bytes C&D: VCCERR PMC EMC EME If 0, power is OK. If 1, power is not faulty If 0, program memory in the module is OK. If 1, program memory is corrupted. If 0, E ROM is OK. If 1, E2ROM was corrupted and then restored. If 0, E ROM is OK. If 1, E2ROM was corrupted. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 125 6 RS 485/232 Communication Protocol 6.4.2.3. Reader Messages Packed Data Format Where: PK P# Ch The first byte is the total number of packets in the string. The second byte is the packet serial number. The third byte is the channel number from which the message is received. Maximum total message length is 128 bytes. Maximum Data* length is 115 bytes. 6.4.2.3.1. Packed Data from the LSC. When the packets originate with the LSC, each packet will be transmitted after an appropriate response from the READER. The LSC may retransmit the last packet upon receipt of a response indicating that the last packet was not received satisfactorily. 6.4.2.3.2. Packed Data from the READER. When the packets originate with the READER, each packet will be transmitted after an appropriate acknowledgement from the LSC. The READER may retransmit the last packet upon receipt of an acknowledgment indicating that the packet was not received satisfactorily Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 126 6 RS 485/232 Communication Protocol 6.5. LSC and Reader Messages. 6.5.1. LSC Commands and Acknowledge Table: Commands Command Code Set Comments Wakeup E0 h 20 h Execute RF cmnd Get Results Get Status 16 h Get Burs t Mess age 1C h Reset Reader Write Parameters 14 h This comm and wakens REA DERS it hat were in sl eep mode. This comm and generates an appropriat e comm and from the READE R to the tags . In a tag-reader sess ion, thi s com mand allows t he LSC to retrieve the results received by the REA DER from the tags . In case of a sel f-contained c ommand, t he READER will return to it s current s tatus . This comm and should be us ed to retrieve the alert mess ages retrieved from the seal s when using t he alert burst mode. These are not available through the regular Get Results . This comm and resets theREADER. Read Parameters BIT Sleep 07 h Unsync Ack Get Reader’s baud rate Set Reader baud rate Set Reader’s Address Ack nowledge OK Ack nowledge Failed Save Command Exec ute Saved command Read Channel Definitions Write Channel Definitions 0A h FF h 10 11 12 13 14 15 16 17 18 19 20 15 h 06 h 09 h 08 h This comm and modifies t he PARAM ETERS of a READE R. After is suing a LOCK c ommand, not all the paramet ers are accessible. This comm and is to read t he PARAM ETERS of a READE R. 11 h Exec utes a built in t est This comm and puts t he READER int o the sleep m ode of operation to enabl e power conservation. Reserved for the unsynchroniz ed response, see table 5. 2 This comm and allows t he LSC to obtain t he reader’s baud rate. This comm and allows t he LSC to s et the REA DER’s baud rate. This comm and sets the READE R’s address for RS-485 usage This is an ac knowledgement of a mes sage com ing from a READER. This is an ac knowledgement of an improper mess age coming from a RE ADER. This comm and saves one of the above commands for lat er execut ion. It is used to s ynchroniz e readers. This comm and execut es the c ommand saved in the READER. When is used in a broadcas t fashion, all the READERS execut e the com mand sim ultaneousl y. This comm and allows t he reading of channel definitions .. 10 h This comm and allows t he writing of channel defini tions. FE h 12 h 92 h 94 h 0F h 17 h Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 127 6 RS 485/232 Communication Protocol 6.5.2. Message Table: Message Wak eup response Exec ute RF cmnd res ponse Get Results response Get Status response Get Burs t Mess age response Reset Reader response Write Parameters response Read Parameters response BIT response Sleep response Unsynch Mess age 10 11 12 13 14 15 16 17 18 Get Reader’s baud rate response Set Reader baud rate response Set Reader’s Address response Save Command response Exec ute Saved command response Read Channel Definitions response Writ e Channel Definitions response Message Commen ts Code No response for W AKE UP st ring 20 h 15 h 16 h 1C h 14 h 06 h 07 h 09 h 08 h 0A h When a REA DER is i n unsync h mode, the RE ADER may s end an unsync h mess age. This oc curs after receiving an alert mes sage from a seal . FF h FE h 12 h 0F h This comm and saves one of the above commands for later exec ution. It is us ed to sy nchroniz e readers. This is a broadc ast c ommand. There is noresponse t o this command. 11 h This comm and allows t he reading of channel definitions . 10 h This comm and allows t he writing of channel definitions .. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 128 6 RS 485/232 Communication Protocol 6.5.3. Parameters Table: The following table relates to the Read and Write Parameters Commands: Parameter Name Parameter Code Parameter Syntax Version of MCU_firmwar Version of S1_firmware Version of S2_firmware RSSI ch1 RSSI ch2 Reader ID ADI ch1 ADI ch2 OrgID* Department ch1 Department ch2 Thw ch1 Thw ch2 Reader Address Transmitter Power ch1 Transmitter Power ch2 System ch1 System ch2 Mode ch1 Mode ch2 Hard wakeup ch1 Hard wakeup ch2 01 h MVER Read/Write Default Access * value [unit] 80 h SVER1 2 Byte 40 h SVER2 2 Byte 87 h 47 h 02 h 81 h 41 h 04 h 82 h RSSI1 RSSI2 RID ADI1 ADI2 OrgID DEP1 R/1 R/W R/W R/2 R/W 1 Byte 1 Byte 4 Byte 4 Byte 4 Byte 2 Byte 1 Byte 42 h DEP2 R/W 85 h 45 h 03 h Thw1 Thw2 RADD R/W R/W R/W 997 997 0000 88 h TRPOR1 R/W 65 1 Byte 48 h TRPOR2 R/W 65 1 Byte 83 h 43 h 84 h 44 h 86 h SYS1 SYS2 MODE1 MODE2 THP1 R/W ** R/W ** R/W R/W R/W 00 00 3256 3.072ms 1 Byte 1 Byte 1 Byte 1 Byte 2 Byte 46 h THP1 R/W 3256 3.072ms 2 Byte 10 11 12 13 14 15 16 17 18 19 20 21 22 Unit Parameter length 2 Byte 00000000 00000000 00000000 0000 1 Byte 3.072ms 3.072ms 2 Byte 2 Byte 2 Byte * /1 or /2 defines the LOCK level. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 129 6 RS 485/232 Communication Protocol Parameters Format: 6.5.3.1. Reader Master Firmware Version MVER, MVER is the version of the master firmware. This is a read only parameter. Bits assignment: 6.5.3.2. Reader Slave1 Firmware Version SVER1. SVER1 is the version of the first slave's firmware. This is a read only parameter. Bits assignment: 6.5.3.3. Reader Slave1 Firmware Version SVER2, SVER2 is the version of the second slave's firmware. This is a read only parameter. Bits assignment: Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 130 6 RS 485/232 Communication Protocol 6.5.3.4. Reader's receives signal strength RSSI1, RSSI1 is the amplitude of the received signal from the READER at the first channel. This value indicates the link's properties to the READER and the system. Bits assignment: 1 byte Reader's receives signal strength RSSI2, RSSI2 is the amplitude of the received signal from the READER at the second channel. This value indicates the link's properties to the READER and the system. Bits assignment: 1 byte 6.5.3.5. Reader ID RID, This is a Reader's ID. Bits assignment: High byte Mid byte Mid byte Low byte Reader and Seal IDs format are identical. For additional information, see paragraph 5.3.2. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 131 6 RS 485/232 Communication Protocol 6.5.3.6. Group Access Identifier ADI. The identifier allows the READER to access groups that conform to this value. Bits assignment: High byte mid byte mid byte Low byte 6.5.3.7. Organization identifier OrgID*, This is the end user's identifier. This parameter is used to segregate between companies. Bits assignment: High byte Low byte * See paragraph 5.3.3. 6.5.3.8. Department DEP This is the customer's department identifier. This parameter is used to segregate between departments within a company. Bits assignment: High byte * See paragraph 5.3.3. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 132 6 RS 485/232 Communication Protocol 6.5.3.9. Reader IH length Thw This is the Reader's IH string length. The values may be modified for a specific application. Bits assignment: High byte Low byte 6.5.3.10. Reader Address RADD. This is the Reader's address on the RS-485 link. For RS-232, the value is 0xFFFF Bits assignment: High byte Low byte 6.5.3.11. Mode MODE. The MODE parameter determines the operating mode of the Reader. Each bit indicates another feature. CRNC CRNC UNSYNC ABMSG N.A N.A N.A N.A N.A Carrier Sense: In some applications, carrier sense must be used before bursting into the air. The Reader uses this flag to decide whether it is required or not. CRNC=0 This response determines the regular mode (no carrier sense). CRNC=1 This response determines that the Reader can sense the carrier. The Reader will execute the RF command only after determining that the air is free. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 133 6 RS 485/232 Communication Protocol UNSYNC In the unsynchronized commands such as Unsynchronized Alert, the Reader's receiver must be ON at all times, waiting for incoming messages from the seals. The mode will be set according to the flag's value: UNSYNC=0 Synchronized mode only. UNSYNC=1 Unsynchronized mode in use, receiver should be set to ON. ABMSG Burst Messages. This flag indicates whether the alert messages will be sent following Alert GET Results, or whether the Reader will burst independently with Alert Messages. BRMSG=0 determines the independent messages burst mode. BRMSG=1 indicates the Alert GET Results mode. 6.5.4. Error Codes See paragraph 6.4.2 Errors Unrecognized Command MCU Error HF Modem Error Result is not ready HF Modem is not responding MCU I/O Error HF Modem BIT Error Parameter is locked Illegal Parameter Code Error Code 01 h 02 h 03 h 05 h 06 h 07 h 08 h 09 h 0A h * Error codes appear in the data field Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 134 6 RS 485/232 Communication Protocol 6.5.5. Detailed Commands. 6.5.5.1. Wakeup 6.5.5.1.1. Command Transmission To wake a READER in sleep mode, a very short string must be sent by the LSC. This will be detected by the hardware and will awaken the READER. As this is a hardware-oriented command, the format is different then all the other commands. LSC > Reader 6.5.5.1.2. Wakeup Response A WAKEUP string transmission wakens the READER. The READER does not respond to such a string. After the command is issued the READER is ready to receive regular commands. 6.5.5.2. Execute RF Command. 6.5.5.2.1. Command Transmission This command enables communication sessions with the seals. The LSC inserts the relevant information in the data field allowing the reader to easily compile the final command string. LSC > Reader Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 135 6 RS 485/232 Communication Protocol Where the channel field is one of the following: Channel Channel 1 Channel 2 Code 01 h 02 h Time&Date are the current Time and Date of the LSC. ADI NOTE: This parameter allows the User to subgroup seals. If the response indicates 0,the Reader uses its internal value for ADI. If not, this is the value which will be transmitted to the seals. In the Data Field, #B includes the Time & Data and ADI fields. 6.5.5.2.2. Execute RF Command ACK. This command involves a RF session with either the tags or seals. For that reason, the READER carries a Long Command. The READER responds with an ACK if the command was successfully received. Reader > LSC STX #B R# MSGT(XX20h) R_status channel CRC ETX # of bytes CRC ETX # of bytes In case of an ACK with an error response: STX #B R# MSGT(XX20h) R_status Err code The final results of this command will be ready later. The LSC should use the GET RESULTS command to retrieve the results. For detailed error codes see para 5.4. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 136 6 RS 485/232 Communication Protocol 6.5.5.2.3. Verify. The Verify command is carried through the high frequency modem. The data field in the Execute RF Command will be: Where: #B Cnmd* Tcm Tiw Ts Na Nr Nt #Rr #Rt ASID Parameters Mask is the number of bytes in the string from the Cmnd* field up to the ADI field. is the opcode of the RF command. The duration of the calibration message window. Resolution is in units of 1024 msec. The duration of the READER interlace window. Resolution is in units of 1024 msec. The duration of a slot for receiving responses from a tag or a seal. Resolution is in units of 1024 msec. The number of slots in the Fixed Assignment Receiving Window. The number of slots in the Random Access Receiving Window. The number of slots in the Alert Receiving Window. The number of random retransmissions from a tag in the Random Access Receiving Window. The number of random retransmissions from a tag in the Alert Receiving Window. Is a random unique ID that is assigned to a specific assignment. For details see Assign commands. Is the parameters bit mask to which the tags and seal respond. This is the interrogation cycle for reading short messages from tags and seals. Tw wakes the tags in random phase. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 137 6 RS 485/232 Communication Protocol Bit Mask should comply with the following table: 6.5.5.2.4. Tamper The Tamper command is intended solely for interrogation of tampered Seals. This command is identical to the Verify command except for the opcode which is 11h. In accordance to this, only Seals that have detected tamper status will respond. The aim of this command is to provide high priority to tampered Seals in a crowded Seal environment. 6.5.5.2.5. Set Set command is a command used when it is necessary to approach a large number of tags or seals. If the string becomes too large it will be split into packets. Each packet includes information for up to 8 tags or seals. This is a very critical command, as it uses internal CRC for each tag data. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 138 6 RS 485/232 Communication Protocol Where: P# PK CRCp CRCt The high 4 bits of the first byte are the packet serial number. The low 4 bits of the first byte are the total number of packets in the BMM string. Is the CRC of the packet. Is the CRC of the tag or seal TF & TID 6.5.5.2.6. Suspended set The Suspended Set command is the command used when it is necessary to prepare a large number of Seals. The command functions in the same way as the SET command, the only difference being that the SET command is executed immediately, while the Seal executes the Suspended SET command automatically only after the Seal wire has been plugged into the Seal. The opcode for this command is 99h. The response is identical to that of the SET response, but with 19h as the message type. 6.5.5.2.7. Soft set This command has the same structure as the SET command. The difference between the two is at the seal level. The seal marks this command as an event, but doesn't reset the events memory. The opcode for this command is 9Ah. The response is identical to that of the SET response, but with 1Ah as the message type. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 139 6 RS 485/232 Communication Protocol 6.5.5.2.8. Deep Sleep 6.5.5.2.9. Hard Wakeup Hard Wakeup is the command used to wake the seal from deep sleep mode. 6.5.5.2.10. Start Alert Burst Mode Starting all seals. Starting specific tags. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 140 6 RS 485/232 Communication Protocol 6.5.5.2.11. Stop Alert Burst Mode Stopping all tags. Data* #B* (09 h) Cmnd* (39h) # of bytes Stopping specific tags Data* #B* (n h) Cmnd* (B9h) PK/P# TF TID CRC TF TID CRC TF TID CRC Seal #1 # of bytes Seal #j Seal #2 6.5.5.2.12. Acknowledge Alert Burst Mode Data* #B* (n h) Cmnd* (BBh) PK/P# TF TID CRC TF TID CRC TF TID CRC Seal #1 # of bytes Seal #j Seal #2 6.5.5.2.13. Read Data Data* #B* (nh) Where: BA BL Cmnd* (63h) BA-Base Addres s BL-Block Length # of bytes This is the base address in the block of data's memory. This is the data block length. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 141 6 RS 485/232 Communication Protocol 6.5.5.2.14. Write Data Data* #B* (n h) Cmnd* (68h) TF TID PK/P# BA Base address Data # of bytes PK/P# = 11h. At present the packets are fixed. 6.5.5.2.15. Reset Data Data* #B* (nh) Cmnd* (AAh) PK/P# TF TID CRCt TF8 TID8 CRC8 Seal #1 # of bytes Seal #8 Up to 8 seals can be reset in one cycle 6.5.5.2.16. Set/Reset Status. Data* #B* (17 h) Cmnd* (6Bh) TF TID Bit mask Bit value # of bytes Only some of the flags can be set and reset. Bit mask marks the status bits to be reset. A value of 0 means “don't modify”. A value of 1 is to “reset value to zero”. Each bit corresponds to the appropriate bit in the LTS. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 142 6 RS 485/232 Communication Protocol 6.5.5.2.17. Write Parameters TF&TID=00 is for a broadcast command. PK/P# = 11h. At present the packets are fixed. 6.5.5.2.18. Read Parameters 6.5.5.2.19. Addressed Verify The following parameters are not applicable to this command: Na, Nt, Rt. 6.5.5.2.20. Read Events Where: EV# #EV is the sequential number of the first Event. is the number of events to be read from the memory. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 143 6 RS 485/232 Communication Protocol 6.5.5.3. Get Results 6.5.5.3.1. Command Transmission This command is used to retrieve the results after an RF communication session. LSC > Reader STX #B R# CMND(0015h) Channel CRC ETX # of bytes Channel indicates the source channel for the results. The value is according to the table in paragraph 5.5.2.1. 6.5.5.3.2. Get Results Command General Response The following string is the general response Reader > LSC STX #B R# MSGT(xx20h) R_status channel DATA PK P# CRC Data* ETX # of bytes # of bytes Where: MSGT DATA The high byte of MSGT is according the scenario in use. The low byte is 20 h. In case the result is not ready, the value of this field is 05 hex error code see paragraph 5.4. If the results are ready, the following applies: Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 144 6 RS 485/232 Communication Protocol PK P# Data* Total number of packets. Packet number sequence number. This string contains the seal records. The field should first be concentrated from all packets before being analyzed. Seals Records: Data*1 Data*2 -------------Data*PK-1 Data*PK Seal Seal Seal Seal Seal Seal record record record record record record #B Data** #B Data** #B Data** #B Data** #B Data** #B Data** Where: #B is the number of bytes for a seal record (including the #B field) is the data received after executing the RF command led by TF, TID and Message Type. Data** Data** TF TID Message Type Data Result # of bytes Where: TF&TID is the ID of the seal.TF&TID Message Type is the transmitted Cmnd*. In case of a problem the Message Type's MSB will be set to “1”. If no seal is detected: Data*1 Seal record #B=0 Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 145 6 RS 485/232 Communication Protocol For the case of an unfinished RF session the complete response is: Reader > LSC STX #B R# MSGT(xx15h) R_status error CRC ETX # of bytes 6.5.5.3.3. Get Results Command Response for Verify Command. The response data field is a string of data received from all the seals. Each seal record is marked with the seal's TF&ID. The internal data field is according to the Parameters mask transmitted with the Verify command. Reader > LSC Data** TF TID Message Type Where: TF&TID Message Type Data results according to the bit mask # of bytes is the ID of the seal. is 10 h. If no seal detected: Data*1 Seal record #B=0 Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 146 6 RS 485/232 Communication Protocol 6.5.5.3.4. Get Results Command Response for Tamper Command. Results are the same as for the Verify command. 6.5.5.3.5. Get Results Command Response for SET Command. Reader > LSC Data** TF TID Message Type Seal Long Status Seal Stamp # of bytes If no seal detected: Data*1 Seal record #B=0 6.5.5.3.6. Get Results Command Response for Suspended SET Command. Results are the same as for the SET command. 6.5.5.3.7. Get Results Command Response for Soft SET Command. Results are the same as for the SET command. 6.5.5.3.8. Get Results Command Response for Read Data Command. Reader > LSC Data** TF TID Message Type Short Status PK/P# Data # of bytes PK/P# = 11h. At present the packets are fixed. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 147 6 RS 485/232 Communication Protocol 6.5.5.3.9. Get Results Command Response for Write Data Command. Reader > LSC Data** TF TID Message Type Short seal status # of bytes 6.5.5.3.10. Get Results Command Response for Deep Sleep. Reader > LSC Data** TF TID Message Type Short seal status # of bytes If no seal detected: Data*1 Seal record #B=0 6.5.5.3.11. Get Results Command Response for Hard Wakeup Command. Reader > LSC Data** TF TID Message Type Short seal status # of bytes Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 148 6 RS 485/232 Communication Protocol 6.5.5.3.12. Get Results Command Response for Reset Data Command. Reader > LSC Data** TF TID Message Type Short seal status # of bytes 6.5.5.3.13. Get Results Command Response for Start Alert Burst Mode Command. Reader > LSC Data** TF TID Message Type Short seal status # of bytes 6.5.5.3.14. Get Results Command Response for Stop Alert Burst Mode Command. Reader > LSC For a group approach: Data** Seal record 00 h For a specific seal response: Data** TF TID Message Type Short seal status # of bytes Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 149 6 RS 485/232 Communication Protocol 6.5.5.3.15. Get Results Command Response for Set/Reset Status Command. Reader > LSC For a group approach: Data** Seal record 00 h For a specific seal response: Data** TF TID Message Type Short seal status # of bytes 6.5.5.3.16. Get Results Command Response for Write Parameters Command. Reader > LSC Data** TF TID Message Type Short seal status # of bytes 6.5.5.3.17. Get Results Command Response for Read Parameters Command. Reader > LSC Data** TF TID Message Short Type seal status PK/P# Par Par Code Value Par Par Code Value Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology # of bytes 150 6 RS 485/232 Communication Protocol 6.5.5.3.18. Get Results Command Response for Addressed Verify Command. Reader > LSC Data** TF TID Message Type Data results according to the bit mask # of bytes Where: If no seal detected: Data*1 Seal record #B=0 6.5.5.3.19. Get Results Command Response for Read Events Command. Data** TF TID Message Type Events records # of bytes Events Records: PK/P# EV# PK/P# EV# Event Record 8 or 16 EV# Event Record 8 or 16 EV# Event Record 8 or 16 EV# Event Record 8 or 16 Event Record 8 or 16 EV# Event Record 8 or 16 Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 151 6 RS 485/232 Communication Protocol If no seal detected: Data*1 Seal record #B=0 8 bytes EVENT message format FSsm #B TF TID MT(33) EV# Event Code D&T STMP CRC EM # of bytes Where Event Code is one of the following: Event Wire Tampered Low Battery Wire Open Wire Closed RTC Stopped DB Corrupted Event Code 0x02 0x03 0x04 0x05 0x08 0x09 16 bytes EVENT message format FSsm #B FSsm #B TF TF TID TID Where: Event Code* ** Event SET SOFT SET READ TIME Changed MT(33) MT(33) EV# EV# Event Code Event Code D&T RID STMP ** CRC CHKSUM EM # of bytes EM # of bytes is with the value 0x80 is with one of the following values: Event Code MSB LSB 0x01 0x07 0x0A 0x0B Delta Data block is a group of events. Events should not be split. If the event is too long, it should be moved to the next block. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 152 6 RS 485/232 Communication Protocol 6.5.5.4. Get Status. 6.5.5.4.1. Command Transmission This command is to retrieve the READER status. Reader > LSC STX #B R# CMND(0016h) CRC ETX # of bytes 6.5.5.4.2. Get Status Command Response The following string is the general response. Reader > LSC STX #B R# MSGT(xx16h) R_status CRC ETX # of bytes 6.5.5.5. Get Burst Message 6.5.5.5.1. Command Transmission This command is used to retrieve the alert messages transmitted asynchronously by seals that are in alert burst mode. Reader > LSC STX #B R# CMND(001Ch) Channel CRC ETX # of bytes Channel indicates the source channel for the results. The value is according to the table in paragraph 5.5.2.1. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 153 6 RS 485/232 Communication Protocol 6.5.5.5.2. Get Burst Message Command General Response. The following string is the general response. Reader > LSC STX #B R# MSGT(xx1Ch) channel PK R_statu P# DATA CRC ETX Data* # of bytes # of bytes Where: MSGT DATA PK P# Data* high byte of MSGT is according the scenario in use. The low byte is 1C h. If the result is not ready, the value of this field is 05 hex error code see Paragraph 5.4. If the result is ready the following applies: Total number of packets. Packet number sequence number. This string ccontains the seal records. The field should first be concentrated from all packets before analyzing. Seals Records: Data*1 Data*2 -------------Data*PK-1 Data*PK Seal Seal Seal Seal Seal Seal record record record record record record #B Data** #B Data** #B Data** #B Data** #B Data** #B Data** Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 154 6 RS 485/232 Communication Protocol Where: #B is the number of bytes for a seal record (including the #B fiels). is the data received after executing the RF command led by TF, TID and Message Type DATA** Data** TF TID Message Type Data Results # of bytes If no seal detected: Data*1 Seal record #B=0 6.5.5.6. Reset Reader. 6.5.5.6.1. Command Transmission This command performs a general reset to all readers at one time. In this command, the LSC does not prompt. LSC > Reader STX #B R# CMND(0014h) CRC ETX Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology # of bytes 155 6 RS 485/232 Communication Protocol 6.5.5.6.2. Reset Reader Command Response The following string is the response. Reader > LSC STX #B R# MSGT(xx14h) R_status CRC ETX # of bytes 6.5.5.7. Write Parameters 6.5.5.7.1. Command Transmission This command enables modification of the parameter's value in the reader. Not all the parameters are available for modification. Please see Table 5.3 . LSC > Reader STX #B PAR1code R# value CMND(0006h) PAR2 code Data CRC value ETX PARm code # of bytes value # of bytes 6.5.5.7.2. Write Parameters Command Response The following string is the response. Reader > LSC STX #B R# MSGT(xx06h) R_status CRC ETX Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology # of bytes 156 6 RS 485/232 Communication Protocol 6.5.5.8. Read Parameters. 6.5.5.8.1. Command Transmission This command enables the reading of the parameter's value from the reader. LSC > Reader STX #B R# PAR1code CMND(0007 h) PAR2 code Data CRC ETX PARm code # of bytes # of bytes 6.5.5.8.2. Read Parameters Command Response The following string is the response. Reader > LSC STX #B R# MSGT(xx07h) value R_status value Data value CRC ETX # of bytes # of bytes Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 157 6 RS 485/232 Communication Protocol 6.5.5.9. BIT 6.5.5.9.1. Command Transmission. This command generates a set of built-in test procedures. LSC > Reader STX #B R# CMND(0009h) CRC ETX # of bytes 6.5.5.9.2. BIT Command Response. The following string is the response. Reader > LSC STX #B R# MSGT(xx09 h) R_status CRC ETX # of bytes 6.5.5.10. Sleep. 6.5.5.10.1. Command Transmission This command places the Reader in sleep mode of operation to save energy. The Wakeup command wakes the Reader from this mode. LSC > Reader STX #B R# CMND(0008h) CRC ETX # of bytes 6.5.5.10.2. Sleep Command Response. The following string is the response: Reader > LSC STX #B R# MSGT(xx08h) R_status CRC ETX Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology # of bytes 158 6 RS 485/232 Communication Protocol 6.5.5.11. Unsynchronized Reader Message. 6.5.5.11.1. Message Transmission When in unsynchronized mode of operation the Reader may burst with a message. The following string will be received for each seal. Reader > LSC STX #B R# MSGT(800Ah) Channel #B R_status TF TID Data Command code CRC Short status ETX # of bytes ORG_ID # of bytes ORG_ID is an option in the response. It depends on the seal's configuration. 6.5.5.11.2. Message Command Ack. The following string is the response: LSC > Reader STX #B R# CMND(000Ah) CRC ETX # of bytes Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 159 6 RS 485/232 Communication Protocol 6.5.5.12. Get Reader's Baud Rate. 6.5.5.12.1. Command Transmision This command places the Reader in a sleep mode of operation to save energy. The Reader will wakeup from this mode by receiving a Wakeup command. LSC > Reader STX #B R# (0000) CMND (00f f h) R_ID CRC ETX # of bytes 6.5.5.12.2. Get Reader's Baudrate Response. The following string is the response: Reader > LSC STX #B R# MSGT(80ff h) R_ID baudrate CRC ETX # of bytes Baudrate: 2400, 4800, 9600, 19200, 38400 6.5.5.13 Set Reader's Baud Rate. The baud rate is interpreted as a decimal number translated into a 32 bit binary number or vise-versa. 6.5.5.13.1. Command Transmission This command puts the Reader in a sleep mode of operation to save energy. The Wakeup command wakes the Reader from this mode. The baudrate is updated after the completion of this command and receipt of the response. LSC > Reader STX #B R# (0000) CMND (00fe h) R_ID baudrate CRC ETX Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology # of bytes 160 6 RS 485/232 Communication Protocol 6.5.5.13.2. Set Reader's Baud Rate Response. The following string is the response: Reader > LSC STX #B R# MSGT(80feh) R_ID baudrate CRC ETX # of bytes 6.5.5.14. Set Reader's Address 6.5.5.14.1. Command Transmission This command sets the Reader's address for RS-485 communication purposes. LSC > Reader STX #B R#(0000) CMND(0012h) R_ID New add CRC ETX # of bytes * To modify an old address, the above command can be used with a specific Reader by specifying R# with the old address. 6.5.5.14.2. Set Reader's Address Response. If the above command is a broadcast, there will be no response. The following string is the response for a command transmission to a specific Reader. Reader > LSC STX #B R# MSGT(xx12h) R_status CRC ETX # of bytes The R# is with the new address. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 161 6 RS 485/232 Communication Protocol 6.5.5.15 Acknowledge OK. LSC > Reader This string is a one-way string that acknowledges a positive message received from the READER. LSC > Reader STX #B R# CMND(0092h) CRC ETX # of bytes 6.5.5.16. Acknowledge Failed. LSC > Reader This string is a one-way string that acknowledges a message indicating a problem coming from the READER. LSC > Reader STX #B R# CMND (0094h) CRC ETX # of bytes 6.5.5.17. Save Command 6.5.5.17.1. Command Transmission This command sends a command to the Reader for later execution by using the “Execute Saved Command”. LSC > Reader STX #B R# CMND(000Fh) phase data CMND* CRC ETX # of bytes Data* # of bytes Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 162 6 RS 485/232 Communication Protocol Where: Phase is the duration from the end of the “Execute Saved Command” and the time required to execute the saved command. The phase is in units of 1.024 msec. is the command code of the saved command for delayed execution. is the relevant data field for the CMND* CMND* Data* If data=0 this command will clear the saved command. 6.5.5.17.2. Save Command Response. The following string is the response: Reader > LSC STX #B R# MSGT(XX0Fh) R_status CRC ETX # of bytes 6.5.5.18. Execute Saved Command 6.5.5.18.1. Command Transmission This command executes the saved command. This is a broadcast command sent to all readers. There will be no response from any reader to this command. LSC > Reader STX #B R# CMND(00017h) Reader I D [1] data 4*k Reader I D [2] CRC ETX .......... # of bytes Reader I D [k] # of bytes The data field details the readers by their IDs. Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 163 6 RS 485/232 Communication Protocol 6.5.5.18.2. Execute Saved Command Response There is no response for this command. 6.5.5.19. Read Channel Definitions Command 6.5.5.19.1. Command Transmission This command allows the reading of the definitions for a device. LSC > Reader STX #B R# CMND(0011h) channel CRC ETX # of bytes Where: Channel is the channel number that the device is connected to. Channel can be 0 to indicate the MCU, or 1,2 etc for the other channels. 6.5.5.19.2. Read Channel Definitions Response. The following string is the response: Reader > LSC STX #B Where: File R# MSGT(XX11h) file 82 CRC ETX # of bytes is the data file that defines the device. File structure is: Name Size [bytes] Part number Serial number Hardware Version Production date Production Batch number Description Reserved 16 16 10 32 45 The format is ASCII Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 164 6 RS 485/232 Communication Protocol 6.5.5.20. Write Channel Definitions Command 6.5.5.20.1. Command Transmission This command enables the writing of definitions of a device. LSC > Reader STX #B R# CMND(0010h) data channel Where: Channel CRC file 82 ETX # of bytes # of bytes is the channel number that the device is connected to. Channel can be 0 to indicate the MCU, or 1,2 etc for the other channels. is the data file that defines the device. File 6.5.5.20.2. Write Channel Definition Response The following string is the response: Reader > LSC STX #B R# MSGT(XX10h) R_status CRC ETX # of bytes Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 165 6 RS 485/232 Communication Protocol Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology 166
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