Communicate to PLC-5 via EIOC or PK with Ethernet I/P

Hello,

I am working on a project to communicate with a PLC-5/80E w/Ethernet sidecar via Ethernet I/P from a PK. Is there some documentation that discusses how to set this up?

Currently, I have an LDT configured to use Class 3 PCCC, Scheduled connection (1000ms). I've selected a valid N file, a valid data length with a data type of 16-bit signed int. DeltaV Diagnostics only tells me that the status is bad. 

I can verify that the PLC-5 is up and available and using RSLinx I can monitor the data in the N-files that I want to read from.


Is there any way to find better diagnostic information to understand what I am doing wrong?

Thank you

  • I'm just now looking at this. The ethernet sidecar is probably doing something called "Encapsulated DF1". I've sent emails to some PK people to see whether or not the PK can do this. I looked back in my old project notes and saw we had done this with a VIM.
  • The short answer is that you need to use a VIM2.

    Guardian KBAs NK-1800-0735 and NK-2000-0176 have more information about PLC-5 support.

    For PLC-5/80E, there is a minimum version of the Ethernet side card before it can be supported (quoted from NK-1800-0735):

    Series E must be revision "D.2 or later"

    Series D must be revision "E.2 or later"

    Series C must be revision "N.2 or later"

    Earlier versions of this card use a different protocol that is just referred to as "Ethernet", rather than EtherNet/IP. The PK, EIOC, and VIM do not support this earlier "Ethernet" protocol. They only support EtherNet/IP.



    Once we are past that, there is a second question: Does the PLC-5 support the messaging mode being used?

    Guardian KBA NK-2000-0176 provides answers to this question. The EIOC and PK only support PCCC using "Protected Type Logical R/W" command type. This mode is not supported by the PLC 5. In this instance, the only way to integrate a PLC 5 via EtherNet/IP into DeltaV is via the VIM2. The VIM2 supports various other PCCC command types, a number of which are supported by the PLC 5. Please see NK-2000-0176 for details.