pfc-howtos

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Hi,

I am trying to communicate with 4 pcs of WAGO 750-354 remote I/O racks and 5 pcs of Vacon NX VFDs equipped with OPT-EC cards (V005) over Ethercat. I am using an Omron GX-JC03 junction slave to split the Ethercat bus into two branches and a WAGO PFC200 (750-8212 Gen 2) running the Codesys Ethercat Master. The station aliases are set manually in the Vacon drives and configured accordingly in the Master settings. The desired cycle time for the Ethercat task is 10 ms.

When starting the system the Ethercat master cannot establish communication to the slaves and the Master log returns a lot of errors, e.g. "SDO access timeout" / "Invalid input / output configuration". However, when disabling the OPT-EC slaves, the Eethercat communication starts working. When logging the CPU load using Putty, I noticed that the OPT-EC slaves are pretty CPU heavy (up to 80%) for some reason. Also, when increasing the cycle time for the Ethercat task to 20 ms or above, the communication works.

Has anyone encountered similar problems?

Setup used:

Master settings:

Similar slave settings are set in all OPT-EC slaves: