Idle function

[cesare]

Good morning,

I have to put an output "high" then wait for 2 seconds and put another output "high". I was looking at IDLE function between the two operations, but I'm not able to work it out.

I create a constant with value 200, because as far as i understand it takes micro seconds, but still once it goes it never waits. I'm pretty sure I'm doing something wrong, my apoligize I'm really newbie in this area.

here below the blocks:

Thanks a lot for any good advice

 

cesare

 

[AlexUT]

Good advice is to use timers.

There is a wrong use of IDLE function.

 

[Cam]

Idle will stop the whole process for however you set it.  This includes I/O updates, as Alex said your probably better off using timers.

[cesare]

31 minutes ago, Cam said:

Idle will stop the whole process for however you set it.  This includes I/O updates, as Alex said your probably better off using timers.

which is fine by me, but it doesn't.

I'll see what I can do using timers, thanks!

[Ausman]

Part of your issue is "Micro" vs "Milli".     Blink really really quickly....damn you missed it.

The other thing is that (and I quote) if this causes a delay greater than 600 milliseconds, the PLC watchdog may be activated.

As Cam and Alex have said, use timers or a count.

Also, your layout of (S) then another (S) needs separating.

cheers, Aus

 

[Flex727]

5 hours ago, AlexUT said:

There is a wrong use of IDLE function.

Totally agree with this. However, that does bring up a question: what would be a correct use of this function? I can't think of any.