Modnet Driver Preformance

Hello All

Please, someone can give me ideas to tuning better the Modnet Protocol.

we get some intermittent communication errors "I/O Device off-line, cannot talk".

We configured 55 IO Devices over Modnet Protocol reading about 200k Tags in the redundant system.

Thank you

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  • On the topic of MODNET tuning, are the Retries and Timeout parameters able to be specified per device? The documentation seems to indicate no, but I wouldn't have thought the same values would apply to all configured devices.

     , you mentioned splitting IO devices across multiple IO servers on the same PC for better performance - are there any performance indicators, or configuration limits, you'd recommend to check to see whether this change would be recommended? E.g. IO server process CPU, late task time, number of configured IO devices, etc.

  • Hi  

    After digging a bit deeper, it turns out that Timeout was added to device specific parameters (but not Retry), this was done in Driver build 3.01.05.000, as part of bug report  63307.

    The Device Address [MODNET.MyDevice] is a neat trick too! I will have to give that a try.

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