Visilogic timers and latching output to stay off

[Abby]

Hello,

 

I have 2 alarms that set off a buzzer. But I need to place a Silencer button in the program using one of the HMI keys. I also need to have after 8 hours unattended, the buzzer shuts off.

 

I need help trying to latch the key input to shut the buzzer off. And after 8 hours has timed out it needs to shut the buzzer off and stay off until someone gets to it. I'm thinking it will need to be set and reset. Is there a better way of doing this? 

[Flex727]

50 minutes ago, Abby said:

I need help trying to latch the key input to shut the buzzer off. And after 8 hours has timed out it needs to shut the buzzer off and stay off until someone gets to it.

I'm not clear on what you're trying to do. The buzzer shuts off when EITHER the key#1 is pressed OR 8 hours have passed? What is SB 53 supposed to do?

Also, DO NOT place multiple logic threads in a single ladder rung. Rung #4 should be two separate rungs and rung #5 should be 3 separate rungs.

[Flex727]

If the answer to my question is yes, then the simplest way would be the following:

[Ausman]

My little bit of input is to say that this is one of those times my pet method of using a single counter based on SB13, instead of timers, would be much easier to set up and also follow the logic online.  The various things you want to do, you simply change the counter amount.   No time to do a sample for you.  Maybe later.