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Comm errors are common on TR40's Serial interface when not using a shielded and grounded cable between the 'control unit' and the RS485/232 converter.
Anything RS485 must be grounded to work properly; This scenario was tested in our labs over a period of 5 months on 2 TR40, 1 with ground and the other without and the ungrounded TR40 gave us 18 errors on average per day.
This is great news. I've seen errors like this pop up for me, but I've ignored them because everything was still working fine. I'll rerun a cable this weekend that's shielded and grounded and see what happens.
Thanks for the info!
Joe (zimmer62)
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