Timer Values

[Andrei Blagaila]

Hi guys,

I'm using a Q50UDEH cpu and I need to add some timers. Can someone explain in seconds if I put a timer like T1 K1, K1 is 0,1 seconds or 0,01 seconds?

Thanks

[Dariusch]

Hei Andrei,

Please have a look at the manual in the download section

"QnUCPU - User's Manual, Function Explanation, Program fundamentals"

Chapter 9.2.10 Timer (T) page 382.

Setting up low and highspeed timers se attached "Timer_setup1".

You could also use as IEC timers. se attached "Timer".

Hope this get you started, else get back.

/Dariusch

 

[Andrei Blagaila]

I found the page. But a question. How do I tell the software which is a high speed timer and a low speed timer? I have 100ms set at a low speed timer and 10ms at high speed timer. I use a timer T for a recipe value that goes up to ZR1200 (the recipe registered value). If I put 10 it's one second. But I I put 100 it's not 10 seconds. It's shorter. Why?

[Dariusch]

Hi Andrei,

Do you use the instructions OUT and OUTH?

Maybe send a screendump of the NW

[Andrei Blagaila]

None of the two. I used as bellow.

[Dariusch]

You use a lowspeed timer.

Can you please try change ZR1204 with a constant ie. K100

 

[Andrei Blagaila]

I loaded the ZR1204 with the value 100. With my phone I timed it and it was around 4-5 seconds.

I changed ZR1204 with K100 and timed that as well. It's slower 6-7 seconds. I really don't understand it.

 

[Dariusch]

1) You have checked that it is not used any other Places?

2) Try make a new timer just 1 NW after and run it with a 100ms puls (SM410)

LD SM410  OUT T151 K100

/Dariusch

Edited February 22, 2017 by Dariusch

[Andrei Blagaila]

I Am sure that the timer is not used in another place. The ZR is used for another timer but It's value is set in the HMI only.

I used SM410 and it does not show me any value in T150. It may be too short for the simulator to register. 

I will try to load it on the PLC rack and try it there. Maybe something changes.

[Dariusch]

ok, you are running a simulator and not on PLC?

I have not tried the simulator, but I think it could be a explanation.

/Dariusch

[Andrei Blagaila]

On the HMI and PLC it's working fine. On the Simulator for some reason it moves in a faster pace. I thing because it uses the CPU of the PC to run everything. Strange!

[Dariusch]

Yes probably.

I always test functions and new FB's on a PLC. But a Q50UDEH is not cheap have extra on the desk  

 

 

[Andrei Blagaila]

I have two. That's not a problem. The problem is everything is programmed in Simple Ladder and was done by another person. Now I have to modify certain things and it's a pain in the *** untill I figure out how they did things and why.

[kaare_t]

On 22.2.2017 at 2:19 PM, Andrei Blagaila said:

On the HMI and PLC it's working fine. On the Simulator for some reason it moves in a faster pace. I thing because it uses the CPU of the PC to run everything. Strange!

The computer simulator does not accurately simulate timers very well (or in other words, don't use it for simulating times, only for function).

[Andrei Blagaila]

Now I know not to trust the simulator. I really thought I had a setting wrong or something. 

[Akahige]

Yes, simulators are useful for testing basic functions like triggers and discrete IO. Anything more complex is lagged. Like your timers.