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Data from PLC is skipping in IWS application.

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Hello,
I have the issue of refreshing the data coming from PLC. The PLC is refreshing data at approx. 30ms. The data displayed on application seems to be skipping some values. I guess it is the scanning issue. Where can I see the scan time of IWS application and can it be modified? if not, what may be the other possible issues to look for?
I am using IWS 8.0 and communicating through OMETH driver.

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  • I do not know about the OMETH driver but with the Siemens SIETH driver using the Standard Driver Sheet is much faster than the using the Main Driver Sheet.

    Also look at the OMETH.ini file. There maybe are some tricks in there to speed things up like in the SIETH driver.

    With 1400 tags my update is around a second. More tags you have the slower it is. Having lots of small driver sheets is faster than one large one. I have 70 driver sheets.
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  • I do not know about the OMETH driver but with the Siemens SIETH driver using the Standard Driver Sheet is much faster than the using the Main Driver Sheet.

    Also look at the OMETH.ini file. There maybe are some tricks in there to speed things up like in the SIETH driver.

    With 1400 tags my update is around a second. More tags you have the slower it is. Having lots of small driver sheets is faster than one large one. I have 70 driver sheets.
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