Applicable Systems
DVP
AH500
AS300
C2000
MS300
Symptoms
A communication error occurred with an expansion module. The module is not responding correctly.
Possible Causes
- Communication cable damaged or loose
- Module communication port failure
Troubleshooting Steps
- Step 1: Check the communication cable connection between PLC and module
Cable is secure and not damaged - Step 2: Verify the module is powered and its status LED is normal
Module power and status are normal
How to Reset
To reset: Fix the cable or module issue, then power-cycle the PLC.
Source: Delta DVP PLC Programming Manual, Delta Electronics
Category: PLC & VFD