Carbon Monoxide Transmitter Modbus
Installation Manual
May 5, 2017
IN-CMD5B4MOD-01-01 Page 32
0x06 --- Write single register (C/F)
Query
0x3A
Slave address
0x01 to 0xFF
MSB
Slave address
0x01 to 0xFF
LSB
0x30 0x36 0x30 0x30 0x31 0x40
0x30 0x30
0x30
Register value LSB
LRC MSB
LRC LSB
0x0D 0x0A
Response
0x3A
Slave address
0x01 to 0xFF
MSB
Slave address
0x01 to 0xFF
LSB
0x30 0x36 0x30 0x30 0x31 0x40
0x30
0x30
0x30
Register value LSB
LRC MSB
LRC LSB
0x0D
0x0A
0x06 --- Write single register (TEMPERATURE_OFFSET)
Query
0x3A
Slave address
0x01 to 0xFF
MSB
Slave address
0x01 to 0xFF
LSB
0x30 0x36 0x30 0x30 0x31 0x41
0x30
0x30
0x30
Register value LSB
LRC MSB
LRC LSB
0x0D
0x0A
Response
0x3A
Slave address
0x01 to 0xFF
MSB
Slave address
0x01 to 0xFF
LSB
0x30 0x36 0x30 0x30 0x31 0x41
0x30
0x30
0x30
Register value LSB
LRC MSB
LRC LSB
0x0D
0x0A
Exception response
0x3A
Slave address
(0x01 to 0xFF)
MSB
Slave address
(0x01 to 0xFF)
LSB
Function Code *
+ 0x80
MSB
Function Code *
+ 0x80
LSB
0x30
Exception code 0x01, 0x02 or 0x03
(0x31, 0x32 or 0x33)
LRC
MSB
LRC
LSB
Return-line feed
(CRLF) 0x0D
Return-line feed
(CRLF) 0x0A
* If Function Code = 03, then MSB = 0x38, LSB = 0x33, for example