How turn on/off the revision for external variables

How turn on/off the revision for external variables

Hello COPA-DATA, i would like to sent the write request to a PLC device to change the status of an external variable to REVISION. We found in documentation for the AddIn only the option to SetValue for an IVariable. This option works well for the internal variables but for the external variables which communicates with the real devices it does not. At this point we try to do that with the following piece of code: By definition it is understandable that these external variables do not have writable a value, so question is: Is there any option how to change just the Status of a variable? Because probably the command SetValue is denied by these variables. Currently it works for
  • internal variables after checking “State / Timestamp for Intern Driver variables” option in runtime setting
  • internal variables after added the parameter to editor’s project.ini file (in zenon 7.60)
  • external variables, but only in simulation mode and with checked option “Write set value”
But it does not work for external variables linked by the drivers to real devices. [/FONT]

This is a migrated post! Originally posted on 30.09.2019 by user tsvoboda. Please be aware that information can be outdated.

    Disclaimer

    This document governs the use of our Community Forum. By registering and using the platform, you accept these conditions.

    The COPA-DATA Community Forum serves to encourage the exchange of information and experience about the zenon software between forum users respectively zenon users.

    Please mind that any published information on the Community Forum is the subjective opinion and view based on the experience and the level of knowledge of the author. COPA-DATA does not overtake any responsibility for the content and the accuracy of the shared information.

    Users of the Community Forum are encouraged to share only well-founded experiences and to point out any risks associated with the implementation of proposed solutions to problems. COPA-DATA at its absolute discretion, reserves the right to moderate the forum. In this connection COPA-DATA may remove any information containing false facts, potentially dangerous solutions, bad language or content that may insult, degrade or discriminate others. COPA-DATA may block a non-complying user from forum access if the user violated this provision.

    COPA-DATA reserves the right to change this document from time to time at own discretion.


    Ing. Punzenberger COPA-DATA GmbH
    Karolingerstraße 7b · 5020 Salzburg · Austria
    www.copadata.com