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how to rpeat some instruction in the programe S7?

Created by: badrino at: 5/28/2012 5:58 PM (4 Replies)

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5/28/2012 5:58 PM	Rate (0)
badrino Posts: 24 Rating: (0)	Hi all I want to repeat the execution of the output A0.0 then A0.1 by alternance every 5 second A0.0 take 5sec to be executed then A0.1 after it will be executed for 5sec and i want to repeat this cycle for one min. How can i do this. thanks
badrino Posts: 24 Rating: (0)
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5/28/2012 6:30 PM	Rate (0)
Saravana kumar Gold Member Joined: 2/6/2009 Last visit: 9/27/2023 Posts: 938 Rating: (117)	Hi, Can you elabrate your question? What do you mean by execution of output, You mean you want set the output?
	_______________________________________________________________ Best Regards T.Saravana Kumar "All for the Best"
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5/28/2012 6:32 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (996)	Please, as first step, read the Step7 beginner - documentation and "first steps", you will find a big big lot of links here.
IBN-Service Posts: 8946 Rating: (996)
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This contribution was helpful to 1 thankful Users hdhosseini

6/4/2012 11:26 AM	Rate (0)
Sachin Patke Posts: 27 Rating: (1)	Hi Badrino, I guess execution means energizing of output. And you want to energize two outputs alternately (5 sec.) for 1 minute. 1. Use two IEC on delay timers. Start the second timer after done bit of firsr timer and reset the first timer by done bit of the second timer. Use timer running bit of first timer as Q0.0. and its NC as Q0.1. There are various ways to generate pulses. 2. You can count nr of pulses of timer running bit with the help of positive or negative edge commands. Compare the value. (e.g. in above case, count negative pulses of second timer running bit and compare with 6. If it's = 6, then stop both timers.
Sachin Patke Posts: 27 Rating: (1)
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6/4/2012 6:32 PM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 9/25/2023 Posts: 6822 Rating: (1349)	Hello badrino, I think reading this old thread would be beneficial (BLINK.zip) DO blink one by one Best regards, Hamid Hosseini
	Demo Channel on Youtube
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