Search the Community

Showing results for tags 'cm092'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Found 1 result

  1. Good Day, I am seeing intermittent bUs (communication bus) errors on 3 VFD's simultaneously.  These are Yaskawa P1000's with CM092 Industrial Ethernet Cards. There are Stratix 5700 switches between the drives and the Controllogix 1756-L75 CPU.  Happens every day to every week -- intermittent. Reading parameter F6-98, it indicates a 'connection time out'.  I don't understand why I would receive this fault.  IGMP snooping and querier are enabled on all switches, if that matters. I do not have unicast checked but Yaskawa said that didn't matter.  Packet time is 100 milliseconds.  I welcome any input on what might cause this.  One Yaskawa tech said I should set speed to 100 Mbps (now set at 10 Mbps). Any help appreciated.