Zener MSC-3 - Modbus Exceptions; Supported Modbus Exception Codes

IM00120
130
IM00120
MSC-3 Start Up
Response:
Function code 1 byte 43
MEI
1
type 1 byte 14
Read device ID code 1 byte
1  Request Basic Device ID
Conformity level 1 byte 0
More follows 1 byte 0
Next object Id 1 byte 0
Object ID 1 byte
0  Vendor name
1  Product code
2  Major/minor Revision
Object byte count 1 byte
Object data "Object byte count" bytes
1
MODBUS Encapsulated Interface
Error:
Function code 1 byte 171 (128+function code, 0xAB)
Exception code 1 byte 1, 2 or 3
Exceptions
The exception codes supported are explained in detail in the document entitled “MODBUS Application
Protocol Specication V1.1b”. Exception codes supported by the MSC-3 are:
Exception
code
Name
1 ILLEGAL FUNCTION CODE
2 ILLEGAL DATA ADDRESS
3 ILLEGAL DATA VALUE