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'Control Timeout' for Control command

Created by: kee at: 9/15/2006 10:07 AM (4 Replies)

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9/15/2006 10:07 AM	Rate (0)
kee Advanced Member Joined: 5/24/2006 Last visit: 11/14/2007 Posts: 93 Rating: (4)	Hi, I'm working on a project that required 5sec Timeout, if the command (BO) was not send to the IEDs, which tells that the IED is not accepting or error while writing. My current workaround is using For/Next loop to delay the time, then get the BI (feedback status of that BO) to check a 'change of state', to determine the timeout. Things dont go what I want, cos while inside the For/Next loop, other control command in the same screen is not functional. please advise a better way to work on it. kee

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9/15/2006 10:54 AM	Rate (0)
Nemo Posts: 3149 Rating: (171)	Hi, I think loops and wait-functions are a little bit dangerous within WinCC. Why don´t you start a Timer on your S7-CPU??? Start this timer and then check, whether the time already has elapsed? nemo
Nemo Posts: 3149 Rating: (171)
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9/15/2006 11:32 AM	Rate (0)
kee Advanced Member Joined: 5/24/2006 Last visit: 11/14/2007 Posts: 93 Rating: (4)	Hi Nemo, I'm working on non-simatic productsat the lower level. So, my idea is to implement it on WinCC, so i'm less dependent on the lower level devices. In WinCC, Global C-script/VBS, anywhere to make it works? kee

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9/15/2006 1:07 PM	Rate (0)
Nemo Posts: 3149 Rating: (171)	Hi some people are using sleep-functions, but this is VERY BAD for your WinCC performance: http://support.automation.siemens.com/WW/view/en/2013015 => I recommend NOT touse this function.... nemo
Nemo Posts: 3149 Rating: (171)
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9/15/2006 1:36 PM	Rate (0)
kee Advanced Member Joined: 5/24/2006 Last visit: 11/14/2007 Posts: 93 Rating: (4)	Thanks Nemo, After reading the notes, I think I will try other methods rather than this. Thanks for your info. kee

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