Reset Timer

Cup O Noodles · Mar 20, 2013

Hey all

Simple question here (I think)...

I'm using RSLogix 5000. I have a TON instruction, it counts to 5 seconds, and then executes some stuff. How do I reset the timer and start it back up again immediately when it gets to 5?

Mickey · Mar 20, 2013

Put the timers "DN" done bit on the rung ahead of the "TON" instruction.

What triggers the timer? Can you post a snap shot of the timer's rung?

Cup O Noodles · Mar 20, 2013

Here is the screenshot

Cup O Noodles · Mar 20, 2013

Putting the done bit before the timer doesn't do anything, help? (Really new to PLC programming)

passwordg · Mar 20, 2013

Remove the timer toggle XIC instruction and put an XIO instruction with the timer's DN bit before the timer.

Anirban Hazra · Mar 21, 2013

Cup O Noodles said:
How do I reset the timer and start it back up again immediately when it gets to 5?

Here is a screenshot to show you how to do that:

Brijm · Mar 21, 2013

In RSlogix there are two ways to reset a TON instruction.

1: As in the examples shown, a false input to the timer will reset a TON. Placing an xio tmr.dn bit in the line is a common way to do this. Note there will be one scan where the timer will not be timing in this method.

2: You can use the RES instruction with the TON. Before your timer, place the logic xic tmr.dn res tmr This will reset the accumulated value.

Reset Timer

Cup O Noodles

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Mickey

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Cup O Noodles

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passwordg

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Anirban Hazra

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