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3s ON , 6s OFF timer

Created by: ni lar at: 2/21/2012 3:34 AM (17 Replies)

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2/21/2012 3:34 AM	Rate (0)
ni lar Posts: 39 Rating: (0)	Dear All, I will to create 3S on 6S off timer. The sequence is as follow. When PLC give start signal Control Valve1 will be on 3S. Then OFF 6S. After 6S Control Valve2 also will be on 3S. then OFF 6S.This will repeat as long as start signal in ON. Please advise me. Thanks & Best Regards, Ni Lar
ni lar Posts: 39 Rating: (0)
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2/21/2012 8:36 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 12/17/2025 Posts: 6885 Rating: (1368)	ni lar Dear All, I will to create 3S on 6S off timer. The sequence is as follow. When PLC give start signal Control Valve1 will be on 3S. Then OFF 6S. After 6S Control Valve2 also will be on 3S. then OFF 6S.This will repeat as long as start signal in ON. Please advise me. Thanks & Best Regards, Ni Lar Dear ni lar, One way to implement this logic is simply counting a pulse which is "ON" every 1 second.This bit can be one of the CPU's clock memories.The whole process is around 18 seconds.By comparing count values and 2 Flip-flops, Valves are activated and deactivated.After passing the time , the counter and outputs reset . Best regards, Hamid Hosseini
	Demo Channel on Youtube
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2/21/2012 9:06 AM	Rate (0)
ni lar Posts: 39 Rating: (0)	Dear hdhosseini, Thanks. If possible,please kindly send a sample program for this. Best regards, ni lar
ni lar Posts: 39 Rating: (0)
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2/21/2012 9:11 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 12/17/2025 Posts: 6885 Rating: (1368)	ni lar Dear hdhosseini, Thanks. If possible,please kindly send a sample program for this. Best regards, ni lar Dear ni lar, Yes, of course it is possible,I will upload the codes here. Best regards, Hamid Hosseini
	Demo Channel on Youtube
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2/21/2012 12:41 PM	Rate (0)
nbk Posts: 197 Rating: (3)	Dear ni lar, Plz see the attached network. Attachment 1.JPG (1666 Downloads)
nbk Posts: 197 Rating: (3)
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2/21/2012 12:46 PM	Rate (0)
nbk Posts: 197 Rating: (3)	Dear ni lar, Plz see the attached network. (remaining part of the same FC). Regards Attachment 2.JPG (1241 Downloads)
nbk Posts: 197 Rating: (3)
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2/21/2012 3:31 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 12/17/2025 Posts: 6885 Rating: (1368)	Dear ni lar, Logic proposed by "nbk" is working good.Please , only reset Timers and outputs when the I0.1 is inactive"FALSE". In current version, when I0.1 change from "TRUE" to "FALSE" system may work for one complete(3s-6s) cycle. Best regards, Hamid Hosseini
	Demo Channel on Youtube
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This contribution was helpful to 1 thankful Users nbk

2/21/2012 5:02 PM	Rate (0)
nbk Posts: 197 Rating: (3)	@ hdhosseini: " ....... only reset Timers and outputs when the I0.1 is inactive"FALSE"." That completes the Function. Thanks Hamid.
nbk Posts: 197 Rating: (3)
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This contribution was helpful to 1 thankful Users hdhosseini

2/21/2012 7:58 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 12/17/2025 Posts: 6885 Rating: (1368)	And this is my solution based on previous description. This would be a general solution Best regards, Hamid Hosseini Attachment pulses_new_sol.zip (926 Downloads)
	Last edited by: hdhosseini at: 06/04/2019 18:52:08 Demo Channel on Youtube
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2/23/2012 6:28 AM	Rate (0)
ni lar Posts: 39 Rating: (0)	DEAR ALL FRIENDS, THANKS A LOT. BEST REGARDS, NI LAR
ni lar Posts: 39 Rating: (0)
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This contribution was helpful to 1 thankful Users hdhosseini

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