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Time changes "heating period" tag in wincc

Created by: bseb214 at: 3/29/2009 2:10 PM (2 Replies)

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3/29/2009 2:10 PM	Rate (0)
bseb214 Posts: 4 Rating: (0)	Hi I need to make control bit in WinCC to control heating process in PLC. in wincc there should be option to choose "heating hours" and "not heating hours" in 24 hours 7 days week. for example: monday : 0 - heat 1 - heat . . 15 - heat 16 - heat 17-not heat . 23 - not heat. and similar for next days. it's look like weekly program for controling boiler in simply thermostat control. is there is a function, script to do this. or how can i read time to set tag in hour periods. this bit tag will be sent to PLC Regards Sebastian
bseb214 Posts: 4 Rating: (0)
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3/30/2009 5:21 PM	Rate (0)
cumulus Platinum Member Joined: 9/27/2007 Last visit: 12/18/2020 Posts: 993 Rating: (102)	Hi Sebastian You can do this easy with VBS-script. 1. cycle runnig (1 hour) Create a new action ("File">"New">"Action") and save this action. Klick at the clock in the Toolbar und select the register "Trigger" Klick at the button "Add" Select as Event "Hourly", name the trigger and configure the minute and second of the hour, when the action should run. the number of the hourto set the bit, you get with: bit = DatePart("h", Time) ' the bit mask = 2 ^ bit ' the bit mask At last you need a little bit logic to read and set the value of the variable regards cumulus
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3/30/2009 8:22 PM	Rate (0)
rogermanrique Bronze Member Joined: 8/11/2008 Last visit: 1/10/2023 Posts: 67 Rating: (22)	one simple question: woldn't it be better to use TOD interrupt OBs (OB10..OB17) and SFC1 (read_clock) instead of using a script in WinCC?? best regards
	Roger A. Manrique roger@manrique.com.br +55 47 8802 3829
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