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Need a power on/off bit in S7 1200 plc

Created by: ANIL.kumar at: 9/26/2018 7:56 AM (2 Replies)

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9/26/2018 7:56 AM	Rate (0)
ANIL.kumar Member Joined: 11/22/2017 Last visit: 5/2/2019 Posts: 4 Rating: (0)	hi i need a power on/off bit in S7 1200 plc.i need to trigger a bit when the main power gets off and on ------------------------------------------------------------------------------------------ Split from For all Experts & Beginners.
	Last edited by: The Helping Hand at: 9/26/2018 10:10:50 AM New subject after splitting
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9/26/2018 10:52 AM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 6/17/2019 Posts: 1176 Rating: (139)	ANIL.kumar hi i need a power on/off bit in S7 1200 plc.i need to trigger a bit when the main power gets off and on Could you be a little more specific? You need to set a bit in the PLC program when the PLC power supply turns off?

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9/30/2018 11:52 PM	Rate (0)
elctro hamad Experienced Member Joined: 5/8/2016 Last visit: 6/9/2019 Posts: 133 Rating: (6)	You can use OB100 startup Move 1 to the bit you need to trigger it This action will be done when you proceed a cold restart
	A lot of potential remains
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