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How to trouble shoot a communication problem
The approach to trouble shooting varies with the type of communications the device
uses, so this section is divided up into multiple sections.
Trouble shooting network problems with AEC AB OS/OA blenders
Problem
You’ve configured more than one Ethernet device and none of them are
communicating.
Solution
It is easy to trouble shoot when you have some devices communicating (at least one),
but with none communicating you’re going to have to start from the beginning.
Step1: Disconnect all of the blenders except for one. Get this one working and then go
to the next one.
Step2: Examine the “DCOMM” light on the PLC and ensure that it is on. If it is off then
remove the snap cover on the PLC and hold in the COMMS button until the DCOMM
light turns on.