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Timestamping in WinCC

Created by: GedasL at: 1/28/2008 9:31 AM (1 Replies)

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1/28/2008 9:31 AM	Rate (0)
GedasL Posts: 19 Rating: (0)	Hello, we needtowriteparametervaluestoWinCCdatabase somethinglikethat: Time1 Parameter1 Parameter2 Parameter3 Time2 Parameter1 Parameter2Parameter3 Example. 00hh.00mm 0.15bar 2.25m 23Hz 00hh.05mm 0.17bar 2.24m 22Hz etc. Problem is that Parameter1 is from PLC that is directly connected toWinCCviaProfibus. Parameter2 and Parameter3 is read from remote station over GPRS. There maybenoconnectionwith remotestationforsometime.Wewouldliketobuffersomevaluesin remotestationandincaseconnectionisrestoredWinCC should filldatabasewithcorrectdataincorrecttime. For example if connection is working WinCC fills database with values: 00hh.00mm 0.15bar 2.25m 23Hz 00hh.05mm 0.17bar 2.24m 22Hz Now there is problems with GPRS connection and we dont receive parameters 2 and 3: 00hh.00mm 0.15bar 2.25m 23Hz 00hh.05mm 0.17bar 2.24m 22Hz 00hh.10mm 0.18bar XX.Xm XXHz - missing Par2 and 3 00hh.15mm 0.19bar XX.Xm XXHz - missing Par2 and 3 Communcation is restored, WInCC receives buffered data from remote station and fills missing data in database 00hh.00mm 0.15bar 2.25m 23Hz 00hh.05mm 0.17bar 2.24m 22Hz 00hh.10mm 0.18bar 2.23m 21Hz - Par2 and 3 restored from buffered data received at 00hh:20mm 00hh.15mm 0.19bar 2.22m 20Hz - Par2 and 3 restored from buffered data received at 00hh:20mm 00hh.20mm 0.19bar 2.21m 19Hz - GPRS connectio restored, current and buffered data received Any ideas, tips, FAQ ? Thank you
GedasL Posts: 19 Rating: (0)
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1/28/2008 10:37 AM	Rate (0)
April Posts: 1776 Rating: (95)	Hi, i think you can solve this with WinCC user archive. See FAQ http://support.automation.siemens.com/WW/view/en/22811841 and for description http://support.automation.siemens.com/WW/view/en/25842925 or WinCC online information system
April Posts: 1776 Rating: (95)
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