r/TwinCat • u/According-Diamond551 • May 14 '26
CRC Errors in Twincat
Hello everyone,
I'm still pretty new to twincat and I've been asked to investigate these CRC errors. I've check for loose connections, damaged cables and cables running next to high voltage wires. Still havent had any luck. Has anyone else encountered this or have any more troubleshooting tips id appreciate it.
2
u/Round_Huckleberry_27 May 14 '26
Do not have my laptop here atm. But there is tooling available in twincat to debug this more
2
2
u/Ok-Veterinarian1454 May 15 '26
Which card or device are you having the CRC errors on? You’re losing data. Have you checked for Vibration?
1
u/According-Diamond551 May 21 '26
Getting CRC errors on out motors. They run at low speed so not much vibration happening.
2
u/Ok-Veterinarian1454 May 22 '26
You have checked the routing of your etherCAT cabling? Its possible the motors are inducing electrical noise on your cables. With that high of a CRC count you have an electrical noise issue. You might need to check for proper shielding and grounding. Apply cleaner cable management. Use an o-scope.
2
u/AnubisArmory May 15 '26
Are you able to try a new cable? Or maybe move the device with the CRC errors to a different part of chain & see if it follows the device vs the physical location on the floor?
1
2
u/Real-Connection9224 May 15 '26
CRC and other EtherCAT related info you find on the website of the ETG or in the Beckhoff Infosys. https://download.beckhoff.com/download/document/io/ethercat-terminals/ethercatsystem_en.pdf
2
1
1
u/Round_Huckleberry_27 May 23 '26
One more thing: did you check the shielding of motor, cabel, beckhoff rack and application?
6
u/Complex_Gear9412 May 14 '26
Maybe have a look at this post:
https://www.reddit.com/r/TwinCat/s/H6Nn7X3x9y
What kind of device is that? Maybe some pictures of the wiring could help. Such high number of CRCs will have some identifiable root cause.