Hello list,
I am working on a system that has an RT-PREEMPT Linux master device with ~40 slaves (a mix of beckhoff devices and other brands) and running IgH master 1.6.4 using the "generic" back-end. I'm getting lost and dropped frames just by starting the master (ethercatctl start) -- around 1 per second. This is without my userspace code even running! Similar behavior when using TwinCAT, too. I can eliminate the frame loss by reducing down to ~25 slaves, but I've confirmed that the ones I'm taking away do not matter (different groups of 25 work, so an individual defective slave seems unlikely). Anyway, I'm looking for advice to diagnose this and hopefully reduce/eliminate the loss if that is a practical goal. The loss is worse when my userspace code starts running, and I believe the loss is contributing to slaves spontaneously dropped to PRE-OP+E, which is really why I want to clean up the performance. This is my first ethercat project so likely making some beginning mistakes. I'm happy to read any materials available regarding best practices and performance if someone has suggestions. If helpful, I have already upgraded all cabling to STP and am planning to try the "igc" backend next week. Thanks in advanced, --Josh This e-mail and the information, including any attachments it contains, are intended to be a confidential communication only to the person or entity to whom it is addressed and may contain information that is privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender and destroy the original message. Thank you. Please consider the environment before printing this email.
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