Related Manuals for ABB TMD-T4
Summary of Contents for ABB TMD-T4
- Page 1 TMD-T4 TEMPERATURE MONITORING DEVICE Communication Protocol INSTRUCTION MANUAL IM148-U-AB v0.92 Firmware version: v3.0 or higher protocol communication - instruction manual IM148-U-AB v0.92 pag. 1 / 12 TMD-T4...
- Page 2 INDEX TMD-T4 MODBUS-RTU COMMUNICATION PROTOCOL MODBUS PROTOCOL CRC GENERATION READING OF THE REGISTERS (Function Code $ 03) SETUP OF THE TMD PARAMETERS (Function Code $ 10) DIAGNOSTIC (Function Code $ 08) REPORT SLAVE ID (Function Code $ 11) ERROR MESSAGE FROM SLAVE TO MASTER...
-
Page 3: Tmd-T4 Modbus-Rtu Communication Protocol
TMD-T4 MODBUS-RTU COMMUNICATION PROTOCOL MODBUS PROTOCOL Modbus is a master-slave communication protocol able to support up to 247 slaves organized as a bus or as a star network; The physical link layer can be RS232 for a point to point connection or RS485 for a network. -
Page 4: Crc Generation
(uchCRCHi « 8 | uchCRCLo ) ; Note: The ”Error Check (CRC)” field must be computed referring to the characters from the first of ADDR to the last of DATA inclusive. protocol communication - instruction manual IM148-U-AB v0.92 pag. 4 / 12 TMD-T4... - Page 5 = data bytes ( 00...?? HEX) (Nr. of register x 2 = n. byte). ERROR CHECK = Check sum. END OF FRAME = End message marker. See the TABLE OF TMD REGISTERS. protocol communication - instruction manual IM148-U-AB v0.92 pag. 5 / 12 TMD-T4...
- Page 6 No. OF REGISTER = Number of registers to be written (2 byte). ERROR CHECK = Check sum. END OF FRAME = End message marker. See the TABLE OF TMD REGISTERS. protocol communication - instruction manual IM148-U-AB v0.92 pag. 6 / 12 TMD-T4...
- Page 7 Slave Address Function Code Function Code Sub-function Hi Sub-function Hi Sub-function Lo Sub-function Lo Data Hi Data Hi Data Lo Data Lo Error Check (CRC) Error Check (CRC) protocol communication - instruction manual IM148-U-AB v0.92 pag. 7 / 12 TMD-T4...
- Page 8 The normal response has the slave ID identifier (54 HEX) and the run indicator status (FF HEX) plus 8 data bytes (byte count is 10, 0A Hex). Last two data bytes carry firmware version (bytes 11 and 12 of the frame ). protocol communication - instruction manual IM148-U-AB v0.92 pag. 8 / 12 TMD-T4...
-
Page 9: Error Message From Slave To Master
Number Of Word Lo (1):Function Code transmitted by master with bit 7 high. Error Check (CRC) (2): Error type: 01= Illegal Function 02= Illegal data address 03= Illegal data value protocol communication - instruction manual IM148-U-AB v0.92 pag. 9 / 12 TMD-T4... -
Page 10: Table Of Tmd Registers
TABLE OF TMD REGISTERS This table is referred to the TMD-T4 device with 4 input channels and TMD-T8 device with 8 input channels. Decimal value is calculated as follow Dec. Value = (MSB Byte *256) + LSB Byte Instantaneous temperature register (read only) -
Page 11: Troubleshooting
- TMD-T8: from bit 0 (CH1) to bit 7 (CH8): 0 = led OFF; 1 = led ON - TMD-T4: from bit 0 (CH1) to bit 3 (CH4): 0 = led OFF; 1 = led ON Alarm signalling led status: LSByte of register 0x270 (read only) - TMD-T8: from bit 0 (CH1) to bit 7 (CH8): 0 = led OFF;... - Page 12 ____________________________________________________________________________________________ ABB S.p.A. ABB SACE Division Viale dell’ industria, 18 20010 Vittuone (MI) – Italy Tel.: 02.9034.1 – Telefax: 02.9034.7609 http://bol.it.abb.com protocol communication - instruction manual IM148-U-AB v0.92 pag. 12 / 12 TMD-T4...