Hi, I am using both UR-RTDE and RTDE C++ API to connect 2 or 3 clients (different process for testing purpose) on port 30004, to listen to robot variables (like joints, speed, tcp offset, …). And sometimes, I got an “End of file” ASIO error which suggests that the robot has closed all the sockets. …

Hi, back on this. There were two issues here. The UR_RTDE lib used is quite slow, so I need to reduce the frequency with multiple receivers. The physical connection was faulty with some “invisible” kernel network disconnection.

It could be a problem with buffer overrun. [image] RTDE Connection Error [WinError 10054] Connection got closed from the Remotehost Robot Communication Hallo, Setup: UR5e, RTDE Python Connection with Ethernet Cable and IP Port 300004 The robot and a laptop …

Caused by a slow consumer ? This is a track I will try to investigate this. My first investigation shows a low CPU usage on the PC who runs the test (less than 2% of CPU), and one client only receive and print joints, and timestamp. I do not see any delay (each frame are printed every 2ms).

Still investigate this one, using a simple C++ process only to receive data (DATA_PACKAGE), no processing. Adding log, I see that must of the time I am waiting for data, and sometimes nothing come for a lot of cycle (125Hz), then suddenly I got a lot of data (filling up my socket buffer). Properly…

RTDE random deconnection

Technical Questions Robot Communication

forbech October 2, 2025, 9:42am 2

It could be a problem with buffer overrun.

/Henning

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RTDE random deconnection

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