We did shipped out new parts to replaced the modules and we found that both new parts have the same symptoms. By further troubleshooting on site, I found that it is related to firmware problem. There are 2 same cards in my system and I have to put a single card into the PLC and let the firmware update first and after success I put another card into the system!
The logger of plc does not show any error except a warning:
Can someone interpret the “binary data”? The help is misleading too, it is so hard for troubleshooting for B&R plc especially for a fresh engineer (at least it stop all my colleagues).
In this case the binary data can be converted to ASCII, then it is: " fw file missing <>". So nothing new.
What are the firmware version numbers of the X20SO4110?
SE LEDs are constant red, that means that the safety processors are in failsafe mode. There should be entries in the safety logger.
What happens after a powercycle?
I think it would be better to contact B&R support for this problem.
What I can see is “Cross Communication” error, with error 98818
And the rests of “cross communication error”, it state that:
it is a known issue that some firmware versions generate this message by mistake during bootup - in this case the module runs without further problems and the message can be ignored."
maybe subsequent error - check other logger entries
Otherwise check 24V supply voltage for interferences and check for correct shieldings.
From checking, I did not find any interference too.
We did power cycle the plc multiple times after update. It end up that I have to remove one SO4110. I have to wait until the first card is OK (with ack), power off again and do same procedures to the next card. It end up everything good.
