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DASSidirect connection from SMC to System Platform objects. Frozen values in runtime.

Jakob Agustsson

Hi everyone,

I use SMC/DASSidirect driver for connecting to PLC's and mapping to system platform. We have been experienciencing object values freezing in runtime but still values showing green in the SMC and when validating references in the I/O mapping window in Syst,Platform. In the object viewer the values dont move.

When doing a reset on the PLC conneciton in the SMC the values start moving again. Normally when the connection is down you would not see green values in the SMC, this is what puzzles me.

Anyone experienced this? and also is there a way to script something that sends a reset command to the SMC or something along that line?

regards

Jakob

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    Hi,

    As indicated by Richard and David, the DA Server technology is kind of old and it is unlikely that it has been verified to work correctly with the version of System Platform you are using, which I believe is what we refer to as 2020 R2 P01. There is a matching OI-SIDIRECT 2020 R2 P01 that is part of the System Platform installer and which is verified to work with the same version of System Platform. Furthermore, you can even upgrade the Communication Drivers to even newer versions (the latest one is 2023 R2) to ensure you have all the latest bug fixes and improvements, without upgrading System Platform since the newer com drivers are backward compatible with older versions of System Platform.

    With respect to resetting/restarting a driver from scripting, the currently available option is the approach described by Richard, to restart the corresponding Windows service through Windows APIs. We are considering adding an API to the com drivers in a future version, and that API may (among other things) allow restart/reset from Application Server scripting, shell scripting, etc.  

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  • 0

    Hi,

    As indicated by Richard and David, the DA Server technology is kind of old and it is unlikely that it has been verified to work correctly with the version of System Platform you are using, which I believe is what we refer to as 2020 R2 P01. There is a matching OI-SIDIRECT 2020 R2 P01 that is part of the System Platform installer and which is verified to work with the same version of System Platform. Furthermore, you can even upgrade the Communication Drivers to even newer versions (the latest one is 2023 R2) to ensure you have all the latest bug fixes and improvements, without upgrading System Platform since the newer com drivers are backward compatible with older versions of System Platform.

    With respect to resetting/restarting a driver from scripting, the currently available option is the approach described by Richard, to restart the corresponding Windows service through Windows APIs. We are considering adding an API to the com drivers in a future version, and that API may (among other things) allow restart/reset from Application Server scripting, shell scripting, etc.  

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