text: <s>[INST] Kinetix 6500 module faults Summary: Spurious module faultsHere's hoping someone can help! I've been trying solve issues with spurious 'module faults' on a system with 7 axis. The faults have occurred across nearly all the servo drives, all with the same outcome; Once the servo axis has detected a module fault, an alarm is generated in the PLC and the system stopped. However, all the drives are seen to be healthy with no faults both on the drive display and via RS Logix 5000. Could this be a firmware issue? [/INST] What is the coarse update period for the motion group? These errors sound like it is too small. If you did not set the coarse update period, the default is 2 milliseconds. I would probably double it for your 7 axes, unless you have other motion axes as well (such as a PF755). I might even set it to 5 milliseconds to ensure no timing problems. \\n </s>