S7-1200 Peak value detection

Hi All.

I have started to write the logic to control a machine that will stress test some components with force (0-2000 N). And I want to log the peak value of the force applied to the component. Has any one ever done similar logging of analog values?

So far I have come up with this...
Step 1:
Read current value 1.
Step 2 - after 50 ms
Read current value 2. and compare the two values.
If the values are increasing, jump back to step 1 if not record the 1st value and display it as peak value.

What do you guys think... Doable?

Regards
Ales

You may have over thought it a bit.

Clear Peak value at start of process.

If current value is greater than Peak then Move current in to Peak.

You can do that every PLC cycle, no time delay needed.

Yep, I agree with BryanG. That's the way we would normally handle such things here.

Sorry for the late reply, been away from the office...

Yep way way easier... tanks allot. Works like a charm!