RTDE Connection Error [WinError 10054] Connection got closed from the Remotehost

Technical Questions Robot Communication
1

Hallo,
Setup: UR5e, RTDE Python
Connection with Ethernet Cable and IP Port 300004

The robot and a laptop are connected with an Ethernet cable, and I tested my program which worked fine. After a bunch of test runs, it often started to close the connection as if the robot wasn’t connected anymore. Because there is a long process in Python, I increased the watchdog timeout in the UR Polyscope. That worked, but without changes, it started to give me the same error mid-running the program:

[WinError 10054] Connection got closed from the Remotehost

And in Python RTDE, I got marked:
writable, _ = select.select(, [self.__sock], , DEFAULT_TIMEOUT)
if len(writable): self.__sock.sendall(buf)

Also the Robot got stuck between two positions and just moved between them or waited 10s if the wait was set to 1s.
I gees my Laptop was overloaded from all my test runs before, maybe the chache wasn´t deleted. But after I restarted the PC and the Robot, it still didn´t work.

Thanks for every help

2

Try to set the frequenze to e.g. 20 Hz (Default is 125 Hz)

3

Thanks for the answer, I will try it on Monday and reply back

4

Yes now it works, it was set on 500Hz because thats the e-Series recommended frequenze, but I guess that was to much data for my work pc and therefore it started to buffer or something.

Is my guess right, could you maybe explane what exactly the problem caused?

5

It seems to be a problem with buffer overrun.
See the answer to the question here:

The bad news: Lowering the frequency may only delay the problem

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