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DeltaV interface to S7-300 & S7-1500 using EIOC Card (Ethernet IP)

Hi,

I'd like to interface several Simens S7- 300 & S7-1500 to a DeltaV DCS (currently v13.3.1, but will be migrated to v14.LTS before this implementation) using an EIOC card communicating via Ethernet IP.

 Having read through the literature for the EIOC card, I don't see any issue with this.

I'll be interfacing to a maximum of 10 PLCs and reading and writing to 20 tags on each PLC node.

Has anyone implemented this before, and if so, is there any potential issue to watch out for?

Any information would be much appreciated.

Coilin

Colin Horgan

• 24 Mar 2022 9:27 AM
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5 Replies

• Colin Horgan

  

  • 25 Mar 2022 11:05 AM

  I've assumed that you can't go directly to the Siemens S7 because its industrial Ethernet Protocol is different so I'm allowing for a Prosoft card as a gateway between the EIOC and the PLC. Has anyone tried this architecture before?

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• Ashley Davey

  

  • 28 Mar 2022 6:08 AM

  Does the EIOC support ProfiNet?
  

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• Colin Horgan

  

  • 28 Mar 2022 10:26 AM

  In reply to Ashley Davey:

  Hi Ashley, I believe it only supports Modbus TCP, EtherNet I/P, and IEC 61850 MMS.

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• Ashley Davey

  

  • 28 Mar 2022 11:15 AM

  Hi Colin, that's is a pity, but that would have been too easy. 
  

  There is an example of an Ethernet/IP implementation on s7-1200/1500 using Ethernet/IP downloadable libraries on the Siemens website (which I have not tested).  I am not sure if I can post links on this forum.
  

  Considering your application, in the absence of ProfiNet, I would use Modbus/TCP as there is no additional hardware required for the s7-1500.

  Extract from Siemens doc s
  

  "The "MB_CLIENT" instruction communicates as Modbus/TCP client over the
  PROFINET interface of the CPU. You do not need any additional hardware to use
  the instruction."

  "
  The "MB_SERVER" instruction communicates as Modbus/TCP server over the PROFINET interface of the CPU. You do not need any additional hardware to use the instruction."
  

  Ashley

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• Colin Horgan

  

  • 31 Mar 2022 9:39 AM

  In reply to Ashley Davey:

  Hi Ashley, thank you for this.
  
  Can the S7-300 use the MB_CLIENT to communicate Modbus/TCP? I don't believe the S7-300 has a PROFINET interface?
  
  Thanks,
  Colin

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