Communication Errors - Allen-Bradley 1719 Ex I/O User Manual

Communication Errors

Troubleshooting
Topic
Communication Errors
Signal Faults
WARNING: Risk of explosion
When work is performed on the distributed I/O station in hazardous areas, there is
a risk of explosion from spark formation.
Before embarking on any work on the distributed I/O station, familiarize yourself
with the operating instructions for the components and their certificates of
compliance, and read the 1719 Ex I/O User Manual.
See the following table for the recommended actions when troubleshooting
communication errors.
Recommended Action for Communication Errors
Error
Communication error on
EtherNet/IP
The software cannot locate an
adapter when establishing the
connection
Rockwell Automation Publication 1719-UM001C-EN-E - August 2018
Remedy
• Check that the cables are connected.
• Check that the transmitting and receiving lines are wired correctly and have
not been swapped.
• Check that the nodes are positioned in linear, star, or ring form and without
branches.
• In the configuration software, check that the selected address is the same as
the distributed I/O station address.
Check that the adapter is plugged in correctly.
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Appendix
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