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Portfolio area InTouch HMI
Created by Florian Champalle
Created on Nov 19, 2024

RELATED IDEAS

InTouch: add configurable item name prefix for Access names

It would be very useful to be able to configure an item name prefix for each Access Name. This prefix would be added to the "item name" of each tag configured to use the given Access Name.

If you want InTouch to communicate with Siemens S7-1200 or S7-1500 PLCs, then you use the OI SIDIR symbolic driver. You create UDTs in InTouch, matching the UDTs in the PLC, and you configure the InTouch UDT members to use tag name as item name (aka address). This is fine, except that for the Siemens symbolic addressing you need to first address the DataBlock Name (DB name). The final address shoud look like "<DB_Name>.<Valve_001>.<OpenCmd>".

If you want InTouch to communicate with Schneider M340 or M580 PLCs, then you best use the Schneider OFS driver with symbolic addressing. You create UDTs in InTouch, matching the UDTs in the PLC, and you configure the InTouch UDT members to use tag name as item name (aka address). This is fine, except that for OFS symbolic addressing you need to first address the device alias in OFS. The final address shoud look like "<OFS_alias>!<Valve_001>.<OpenCmd>".

Yes, you can use the OI Gateway between InTouch and OI SIDIR, or between InTouch and Schneider OFS, because you can configure a prefix in the Gateway, but it's not very convenient and easy to setup.

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    • Piotr Polok
      Jun 13, 2025

      I agree with Florian.

      The problem is not only with communication with Siemens controllers, we have exactly the same problem with communication with Emerson controllers (GESRTP) or Codesys controllers.

      What's more this problem is not only related to InTouch. It also occurs in System Platform when using "IO Device mapping". That's why I think that a much better solution would be to introduce the configurable prefix functionality in OISerwers. This would solve the problems in inTouch and System Platforms in one go.

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