Pause a timer

[KAMAMT]

Hi,

 

I have a system running a V570 that is programmed using visilogic 9.6.0.  Basically I am looking at pausing a timer. 

 

How I have the timer set right now is as follows:

 

MB1       TD1

-|  |--------(  )---

 

I would like it to pause whenever MB2 is true. 

For example, if TD1 is preset to 1 hour and it has been running so it only has 30 minutes left, I would like to toggle a pause button connected to MB2 to stop the timer.  When I toggle the pause button back, I would like the timer to continue counting down from the 30 minutes.

 

Is this as simple as this or do I need to store the current time when I pause and load it when I unpause?:

 

MB1     MB2      TD1

-|  |-------| / |-------(  )---

 

 

I know this is very easy to test but the PLC is currently in use and I will only have a brief window to download so I would like to get it right the first try.

 

Thanks.

[Eyal Koren]

Hi KAMANT,

In general, your logic is correct, but to pause the timer and continue from the current value you need to use TA timer, and not TD.

Anyway, I attached a part from Visilogic help file concerning the use of timers

Timers.pdf