Sterlco A3 Blender Control and Data Acquisition Software User Manual
Page 114
Page Number 114
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.