PI Interfaces

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  1. Modify the Modbus Interface to accept 32-bit Unsigned Ints from the PLC

    provide a data type to accept a 4 byte unsigned integer from the PLC.  At this point, it would be stored in a 64-bit float in PI DA.

    21 votes

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    1 comment  ·  Modbus Interfaces  ·  Flag idea as inappropriate…  ·  Admin →
    DECLINED  ·  AdminAllison Muraski (Admin, OSIsoft) responded

    Thank you for your feedback. We do not plan to add native support for 32-bit Unsigned Integers to PI Interface for Modbus Ethernet PLC. Please check out the workaround provided in the comments below.

  2. Support multiple Modbus devices on the same machine

    Add support for multiple Modbus devices (using the same IP address but different port numbers) on the same machine. For example, the interface could allow the user to configure something like this:

    /dn= xxx.xx.xxx.xx:43120,/cn=1,/polldelay=0,/to=2,/rci=30,/writedelay=0,/debug=0,/disabled=0
    /dn= xxx.xx.xxx.xx:43122,/cn=1,/polldelay=0,/to=2,/rci=30,/writedelay=0,/debug=0,/disabled=0
    /dn= xxx.xx.xxx.xx:43124,/cn=1,/polldelay=0,/to=2,/rci=30,/writedelay=0,/debug=0,/disabled=0
     
    Note: This was previously Enhancement 121980.

    9 votes

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    2 comments  ·  Modbus Interfaces  ·  Flag idea as inappropriate…  ·  Admin →
    DECLINED  ·  AdminAllison Muraski (Admin, OSIsoft) responded

    While we are declining to add this functionality to the PI Interface for Modbus Ethernet PLC, the PI Adapter for Modbus TCP does support the configuration of Modbus devices with the same IP address and a unique port number. We encourage you to go to the PI Adapters forum to share your use cases.

  3. Support Modbus device failover

    Enhance the interface to support redundant Modbus devices with different network cards/IP addresses. The controllers would publish a status update on the active device, and the interface should request data from it accordingly.

    0 votes

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    DECLINED  ·  0 comments  ·  Modbus Interfaces  ·  Flag idea as inappropriate…  ·  Admin →
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