Rockwell Automation Publication 1756-UM540E-EN-P - December 2017 107
1756-OF8I Isolated Analog Output Module Chapter 5
Troubleshooting
Issue: I/O Module Connection Error or I/O Module Configuration Error
(yellow triangle in Logix Designer I/O configuration)
1. Verify that both entries in the Logix Designer I/O Configuration have the
same RPI.
2. Verify that both entries in the Logix Designer I/O Configuration have the
same configuration.
You can toggle the Sync_Module_Config BOOL tag in the IO_Mapping
Program MainRoutine Rung 1. This will trigger a copy of the module A
configuration to the module B configuration, making them the same.
3. Remove the module from the chassis.
4. Reinsert the module.
5. If you still have the error, delete one of the module entries in the Logix
Designer I/O Configuration and add it into your project again.
These troubleshooting steps below assume that the system was commissioned
and running without any errors before the issue occurred.
Issue: Output is ON in the user application code, but is not ON at the Output
module.
1. Verify that at least one of the connections to the output module is active.
2. Verify that the output is ON in the output module tags.
3. Confirm whether all of the connections in the chassis are faulted,
including the Ethernet modules.
4. Troubleshoot the Ethernet communication issue to the Ethernet modules.
5. Troubleshoot the error code displayed in Module Properties > Connection tab.
In the example project, this is EN2T_B.
IMPORTANT This copy will not change the module RPI.
The two I/O module entries must have the same configuration.
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