REXYGEN Community Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Login

    Solved Logging a String

    REXYGEN Studio
    3
    11
    842
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • cechuratC
      cechurat
      last edited by

      Hi Mike,

      thank you for your question. It is possible to write string to Archives using function bloc called ARS - https://www.rexygen.com/doc/ENGLISH/MANUALS/BRef/ARS.html

      However it is quite challenging to read out the strings back from Archive to the running algorithm. I would suggest to write simple cyclic string buffer in REXLANG just for your purpose. Therefore you can easily compare the strings within running algorithm using String library function blocks (or equal functions embedded in REXLANG).

      Hope it helps.

      Kind regards
      Tomas

      1 Reply Last reply Reply Quote 0
      • M
        MikeyH
        last edited by MikeyH

        Thank you Tomas,

        I will try that. I do not need to read the string back to the HMI. Just have it available in the archive CSV. The purpose is to put an observational comment against an event, parameter change etc. That way when looking at the archive data I can see a logged comment as to why and when I changed the parameter.

        I assume the HMI Input.svg is ok to use for text?

        Cheers

        Mike

        1 Reply Last reply Reply Quote 0
        • R
          reitinge
          last edited by reitinge

          Hi Mike,
          you are right, the HMI Input component can be used for text after changing format to text in the component Options.

          Documentation for Rexygen HMI can be found here:
          https://www.rexygen.com/doc/ENGLISH/MANUALS/RexHMI/RexHMI_ENG.html

          Cheers
          Jan

          1 Reply Last reply Reply Quote 0
          • M
            MikeyH
            last edited by

            Thank you Jan

            1 Reply Last reply Reply Quote 0
            • M
              MikeyH
              last edited by

              Hi Jan,

              When trying to use the ARS block and/or the MHI Input.svg I get the attached error. Download error.csv

              Cheers

              Mike

              1 Reply Last reply Reply Quote 0
              • M
                MikeyH
                last edited by MikeyH

                Update,

                This seems of fixed itself! I have no issue using the ARS block or input.svg box now.

                I know the ARS block only logs when "run" is set to on. How can I have the ARS block only log the input value of the input.svg once each time the input is changed. Currently once I enter a value it continuously logs it, I only want the value to appear in log/archive once at from time I entered it. Then log the next input once and so on.

                Deleting the text from the HMI input.svg works but I wondered if there is a better way.

                Cheers

                Mike

                1 Reply Last reply Reply Quote 0
                • R
                  reitinge
                  last edited by

                  Hi Mike,
                  string change checking can be easily done in a Python block:
                  https://www.rexygen.com/doc/ENGLISH/MANUALS/BRef/PYTHON.html
                  You can compare the previous value of a string input with the current one, and if the values ​​differ, you can set the logical output to true and connect that output to the ARS:run input.

                  There is probably other solution with the String blocks:
                  https://www.rexygen.com/doc/ENGLISH/MANUALS/BRef/BRef_ENGch11.html
                  and Logic control blocks:
                  https://www.rexygen.com/doc/ENGLISH/MANUALS/BRef/BRef_ENGch8.html
                  but the solution using a Python block is easier for me personally.

                  1 Reply Last reply Reply Quote 0
                  • M
                    MikeyH
                    last edited by

                    Thank you Jan,

                    How do I gain access to the Python block? I have the latest version of REXYGEN but it does not show in my library.

                    27436544-c172-4a2d-a2a3-ea8817169204-image.png

                    Cheers

                    Mike

                    1 Reply Last reply Reply Quote 0
                    • R
                      reitinge
                      last edited by

                      You're welcome, Mike.
                      The Python block must be checked when installing Rexygen Studio (it is not part of the default installation).
                      Python_install.PNG

                      Cheers
                      Jan

                      M 1 Reply Last reply Reply Quote 0
                      • M
                        MikeyH @reitinge
                        last edited by

                        Oh I see, that’s an easy fix.

                        Thanks Jan

                        1 Reply Last reply Reply Quote 0
                        • First post
                          Last post

                        This is a community forum for REXYGEN users and fans. Detailed information can be found at REXYGEN homepage.

                        There is also an outdated REXYGEN community forum.

                        Powered by NodeBB.