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6/9/2011 10:38 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365) |
Check the following manual. 2 different values considered for process value in this function. the first is PV_PER which is raw digitized value from analog card, you have to define offset and factor to scale it to physical values.(PVPER_ON=1) the 2nd option is using real value PV_IN as scaled value in physical range.(PVPER_ON=0) You can select one of these options by PVPER_ON. The output PV is only indication for us to check the current process values used to calculate error(SP-PV). The output parameters LMN or LMN_PER can be used on the analog output.Check the manual for full description. regards Attachmentfb41.pdf (451 Downloads) |
Last edited by: hdhosseini at: 6/9/2011 10:52 PM |
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6/9/2011 11:27 PM | |
Posts: 133 Rating: (2) |
ok thanks |
6/9/2011 11:46 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365) |
Hi Also there are plenty of disccussion on the same topic you can find in the forum,some of the participant shared their experiences here and also provided their codes: https://support.automation.siemens.com/WW/llisapi.dll?query=fb41&func=cslib.cssearch&content=adsearch%2Fadsearch.aspx%3Ftab%3D2&lang=en&siteid=csius&objaction=cssearch&searchinprim=_searchinprim_&nodeid=99&x=16&y=8&cssearchengine=NEW&x=0&y=0 Regards |
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