Protective stop error C271A3 low level real-time thread run time and communication out of sync

Hello,
We have encountered the problem while sending the commands through socket communication.
Error code - C271A3 protective stop error low level real-time thread. run time communication out of sync.
What should be the cause of this problem.

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Hello,
have you found A solution For Your issue?

Best Regards.

We have been having this problem as well. It occurs every few days while running a UR script function that is “Waiting for CNC” to finish machining. The signal is supposed to come over Socket from Versabuilt’s Robot2CNC. Seems to be a polyscope issue. Any thoughts on this? There is a .5 second wait in function loop and we also added a sync() to the loop but problem persists.
Thank you. Robot alarm is C271A1

We found an issue where if we had a function that was process intensive, say doing a bunch of math on points, it could cause this issue. This was E-Series robots. By simply breaking the function into two with a sync() in the middle we were able to eliminate the fault.

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