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  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.
  2. hello.   I've been trying to communicate this omron plc CP1L-EM30DT1-D, with a yaskawa inverter cimr-vu4a0004faa. but i can't figure out how to make de correct mov or configuration in de DM. i need to run/stop, change frequency.    some help, please. :) 485PRUEBA.cxp 485PRUEBA.opt
  3. All, I have been trying for days to find a way to control a yaskawa v1000 over Ethernet. I have been trying to use explicit messaging but I cannot find the instance class  etc in any of the yaskawa literature. All I can find is to use EDS files with RS5000 but I have a micrologix 1400 and I don't have that capability. If anyone has any recommendations let me know. Thank You, Liam M.     
  4. Hello. I am working on an a machine automation project. I come from an Allen-Bradley background and am new to the OMRON environment. However so far the difference has appeared slight.  My current issue, involves an MCH71 motion controller and an 'ORIGIN SEARCH' Routine.  I am using MECHATROLLINKS II for the communication. I have set up my Registers just fine in CX-Programmer and have successfully performed jogging and incremental move functions from CX-Programmer using ladder instructions with the required bits sent to the MCH. I am however at a bit of a hurdle with the ORIGIN SEARCH function. I have read the manual numerous times. I have not been able to determine where exactly the Limit Switch is to be terminated to become a 'point of origin' so i can perform an origin search command. I will be using a single point of origin (Limit Switch) I have included any relevant documentation that I could dig up. It would APPEAR to me that the limit switch must be terminated to '41' I do not know what that refers to in terms of I/O points. (This was an old demo unit that I am now to utilize for a 3 axis machine...) I might add that this is my first motion control project. (I am from process control background) Each servodriver unit has a break-out I/O terminal block. I find no reference to '41' on any of them. (The 'P-OT and N-OT' have been disabled within the system parameters as well.) I plan on using these parameters;  1 for P4AA01 1 for P4AA02 (could this be wrong) 1 for P4AA03(also unsure) 1 for P4AA04(this i am pretty sure about) 0 for P4AA05(this i am positive will be required for accuracy) P4AA07 will require tweaking once i have set this up.    It is all in test mode and the servos are just secured to a test bench....Thanks. I