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Single Momentary Button to Set/Reset an Output

Created by: G_R_E_Y_31 at: 1/3/2013 2:02 AM (10 Replies)

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1/3/2013 2:02 AM	Rate (0)
G_R_E_Y_31 Bronze Member Joined: 5/26/2011 Last visit: 8/5/2024 Posts: 456 Rating: (7)	Hello Experts! Is it possible to have a single momentary push button to set/reset an output bit? That is, first click it would momentarily power a bit which is intended to set an output bit and second click it would, again, by momentarily powering the same bit, would reset the same output? I would greatly appreciate any answers, for I'm starting to think that this is somewhat impossible! But, of course, it could just seem to be! Thanks much!
	Last edited by: nicer at: 1/3/2013 3:15 AM Last edited by: nicer at: 1/3/2013 2:14 AM
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1/3/2013 5:24 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 11/11/2024 Posts: 3026 Rating: (1057)	Hello nicer Yes, it is possible and you would have come across THIS thread (and other solutions) if you'd cared to do a search onthat subjecthere in the Forum (instead of sending the same question also as a PM )
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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This contribution was helpful to 3 thankful Users Ton Verra playerslight Marcjan

1/8/2013 2:01 AM	Rate (0)
G_R_E_Y_31 Bronze Member Joined: 5/26/2011 Last visit: 8/5/2024 Posts: 456 Rating: (7)
	Last edited by: nicer at: 1/8/2013 2:21 AM
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1/8/2013 2:02 AM	Rate (0)
G_R_E_Y_31 Bronze Member Joined: 5/26/2011 Last visit: 8/5/2024 Posts: 456 Rating: (7)
	Last edited by: nicer at: 1/8/2013 2:21 AM
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1/8/2013 2:08 AM	Rate (0)
G_R_E_Y_31 Bronze Member Joined: 5/26/2011 Last visit: 8/5/2024 Posts: 456 Rating: (7)
	Last edited by: nicer at: 1/8/2013 2:22 AM
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1/8/2013 2:19 AM	Rate (0)
G_R_E_Y_31 Bronze Member Joined: 5/26/2011 Last visit: 8/5/2024 Posts: 456 Rating: (7)	Hi sir fritz! Thanks for the very informative link you've provided! And yes, I admit that it is my bad to not have first search exhaustively, for often it is my PMs (to you great guys) that are really doing the job!haha (for not all the time the experts are online, but sorry if that was sort of annoyance!hehe) And so, I want to share some answers I've got for those who have the same requirement: First, on your link, this is one of what I've learned (from bit7): -------------------------- A I 0.0 FPM 0.0 X Q 0.0 = Q 0.0 -------------------------- On PM, the good Pegaia has given me the ladder couterpart: -------------------------------------------------------------- MyIn MyAux1 -\|\|-----------[P Trigher]---[NOT}---(jump A) MyOut MyOut ---\|/\|-------------------------( ) lable A ... follow the logic --------------------------------------------------------------- And another solution from another thread: /tf/WW/en/Posts/20496 These are all basically an "invert bit" logic, done on the PLC using a single momentary input bit. Though Pegaia's solution haven't done my requirement (but perhaps it could), for it seems to prevent (or easily) further interlocks to the invertbit logic, which is what I need. And so, I thought that it is best for me to implement the third link's solution (w/ delay timer, but which lendssome minor problems with it, includingmore complexity memory). This is because, initially, I thought that bit7's solution also suffer's from Pegaia's (for they are just the same code, just differ on language), but I then discover that it does not! For I can do double coils in STL (though I think it's, sometimes, ok in LAD), hence right after the inverbit logic, I do my interlock logic for the reset (hence prevent the set in the invertbit logic) of my output bit. And so, I've utilized bit7's Anyways, thanks to all!
	Last edited by: nicer at: 1/8/2013 2:28 AM Last edited by: nicer at: 1/8/2013 2:24 AM
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This contribution was helpful to 1 thankful Users zglevis

1/17/2013 2:33 PM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 11/11/2024 Posts: 3026 Rating: (1057)	nicer ... for often it is my PMs that are really doing the job! On PM, the good Pegaia has given me the ladder couterpart Hello nicer To start with, I'mpleased to hear that the answers have helped and aslo that you shared the advice that Pegaia gave you in a PM here. Having said that, I'd appreciate if you'd only post your questions in the Forum and refrain from "broadcasting" the same post via private messages to a number of other forum users for the off chance of getting a speedier response. I fear that this kind of behaviour (and your open admission in doing so) maybe perceivedas selfish and/or arrogantand couldvery well spoil your choices in the future to get responses. You call at the end of the day, but food for thought anyhow I hope
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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11/30/2013 10:33 AM	Rate (0)
n_alex Posts: 1 Rating: (0)	I'm new in this stuff...anyway I guess I found a solution at your problem. Been working with an easy 512...in ladder-The idea is next-parametres of T01: on delay 0.07 seconds...T02: off delay 0.06 seconds).
n_alex Posts: 1 Rating: (0)	Last edited by: O_Moderator at: 11/30/2013 10:54 AM
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12/2/2013 2:35 PM	Rate (0)
Piotr.M Platinum Expert Joined: 6/24/2013 Last visit: 11/11/2024 Posts: 1652 Rating: (426)	Hi a solution in LAD would be: [code] 1. NW#1 I_BUTTON FP_BIT Q_OUTPUT On_Command ----------\|\|------------(P)---------------\|\\|-----------------() \| ! Q_OUTPUT Off_Command !-------\| \|-----------------() 2. NW#2 On_Command INTERLOCK Off_Command Q_OUTPUT --------------\|\|-------------\|\|-------------\|\\|-----------------() \| Q_OUTPUT \| --------------\|\|-------\| [/code] Where I_BUTTON - Your Toggle Button FP_BIT - a Marker [Mx.y] or a STAT variable in the FB for FP function Q_OUTPUT - Your toggled output INTERLOCK - Your conditions at which energizing Output is allowed [i.e. level protection for pump] On_Command - Temp variable - switches output ON when Interlock is True Off_Command - Temp variable - switches output OFF when button pressed and Out is energized. Hope this helps Piotr
	Last edited by: Piotr.M at: 12/2/2013 2:38 PM
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2/3/2022 8:23 AM	Rate (0)
avu Member Joined: 4/14/2021 Last visit: 10/28/2024 Posts: 2 Rating: (0)	i have try this concept logic attached on photo please follow and test as example Attachment logic.png (875 Downloads)

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