I/o module status, Error location, Module error number – Rockwell Automation 198x Modular DeviceNet Starter Auxiliary I/O User Manual
Page 155
DeviceNet Information A-15
Publication 198-UM001B-EN-P September 2001
I/O Module Status
This bit turns on when the voltage is below 18V DC. This is the only indication that some
sensors or valve modules may not function properly. All bits will be on when an I/O bus fault
has occurred, which alerts the user that the I/O data is no longer valid.
Error Location
This bit turns on to indicate which module has caused the fault that is indicated in the error
code. There is one bit for each possible module. Example: bit0=module1
Module Error Number
Use the table below to identify the module that has a fault. This is a condensed format
version of the information in Table A.21.
Table A.20 Module Error Number
Location No. — Bit
I/O
Module
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
No Fault
0
0
0
0
0
0
0
1
Module 1
0
0
0
0
0
0
1
0
Module 2
0
0
0
0
0
0
1
1
Module 3
0
0
0
0
0
1
0
0
Module 4
0
0
0
0
0
1
0
1
Module 5
0
0
0
0
0
1
1
0
Module 6
0
0
0
0
0
1
1
1
Module 7
0
0
0
0
1
0
0
0
Module 8
0
0
0
0
1
0
0
1
Module 9
0
0
0
0
1
0
1
0
Module 10
0
0
0
0
1
0
1
1
Module 11
0
0
0
0
1
1
0
0
Module 12
0
0
0
0
1
1
0
1
Module 13
0
0
0
0
1
1
1
0
Module 14
0
0
0
0
1
1
1
1
Module 15
0
0
0
1
0
0
0
0
Module 16