Invalid 1771 module response

What does F018 mean?

The 1771 module responded with an invalid message or data. This indicates a communication protocol issue or a fault within the 1771 module itself.

• The 1771 module response was not valid

Click steps to track your progress.

1. 1

   Inspect communication cabling between the Logix 5000 system and the 1771 module for damage, proper seating, and loose connections.

2. 2

   Verify status indicators on the 1771 module and any associated communication adapter for fault or error indications.

3. 3

   Measure the power supply voltage to the 1771 I/O rack or module against nominal specifications.

4. 4

   Check the Logix 5000 controller's configuration for the 1771 module, ensuring it matches the physical module type and addressing settings (e.g., DIP switches).