Our CS8C was working fine, and then I tried to add a gate sensor to UESB1+/-, but that did not work (turned out the gate sensor faulty), so I tried to short the two pins to close the loop (all the pins are connected to a terminal block), which is what we had it before I tried to add the gate sensor. Now the controller is having an error, "U". Looking in the manual, it says "EStop 1 order memorised ...", and I tried to disconnect UESB1+/- and then connect it back up again, but could not figure out how to acknowledge the error. When I disconnected UESB1+/-, the error code changed to "c", which according to the manual means the e-stop is activated, which is correct, but could not figure out how to get rid of the "U".
From the MCP, under "Control Panel", "IO", "Controller Status", there is a fault with UESB1, but am unsure what that means as I thought I had connected the two pins up again correctly... the right most key says "Info", and according to the manual, this should say "Ack." (acknowledgement) if the error has been resolved.
Please let me know if anything is unclear. Any suggestions/advice would be much appreciated.