Exception Code - Bender ISOMETER isoCHA425HV Manual

Response of the ISOMETER® to the master
Byte
Byte 0
Byte 1
Byte 2, 3
Byte 4, 5
Byte 6, 7
5.2.3

Exception code

If the ISOMETER® cannot respond to a request, it will send an exception code with which possible faults can be
narrowed down.
Exception code
0x01
0x02
0x03
0x04
0x05
0x06
Structure of the exception code
Byte
Byte 0
Byte 1
Byte 2
Byte 3, 4
Name
ISOMETER® Modbus address
Function code
Start register
Number of registers
CRC16 checksum
Impermissible function
Impermissible data access
Impermissible data value
Internal fault
Acknowledgement of receipt (answer will be time-delayed)
Request not accepted (repeat request if necessary)
Name
ISOMETER® Modbus address
Function code (0x03) + 0x80
Data (exception code)
CRC16 checksum
isoCHA425HV_D00404_04_M_XXEN/10.2023
ISOMETER® isoCHA425HV
Example
0x03
0x10
0x0BBB
0x0001
0x722A
Description
Example
0x03
0x83
0x04
0xE133
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