Zener MSC-3 - Modbus Function Code Details (Continued); Function Code 04: Read Input Registers; Function Code 05: Write Single Coil; Function Code 06: Write Single Register

IM00120
127
IM00120
MSC-3 Instruction Manual
Function Code 04: Read Input Registers
Request:
Function code 1 byte 4
Starting address 2 bytes 0 to 18
Quantity of registers 2 bytes 1 to 19
Response:
Function code 1 byte 4
Byte count 1 byte 2 x (Quantity of registers)
Register value(s) 2 x (Quantity of registers) bytes MSC-3nput register(s)
Error:
Function code 1 byte 132 (128+function code, 0x84)
Exception code 1 byte 1, 2 or 3
Function Code 05: Write Single Cell
Request:
Function code 1 byte 5
Output address 2 bytes 0 to 4
Output value 2 bytes 0x0000 or 0xFF00
Response:
Function code 1 byte 5
Output address 2 bytes 0 to 4
Output value 2 bytes 0x0000 or 0xFF00
Error:
Function code 1 byte 133 (128+function code, 0x85)
Exception code 1 byte 1, 2 or 3
Function Code 06: Write Single Register
Request:
Function code 1 byte 6
Register address 2 bytes 0 to 9
Register value 2 bytes Data for MSC-3 holding register
Response:
Function code 1 byte 6
Register address 2 bytes 0 to 9
Register value 2 bytes Data for MSC-3 holding register