Hysteresis problem in masterDP

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6 posts • Page 1 of 1
NFedorenko
Posts:45
Joined: Wed Jun 15, 2016 5:41 pm

Hysteresis problem in masterDP

Post by NFedorenko »

Hello to all!

Today I found one misterious problem with alert handling power config.
When I check hysteresis in masterDP, and then transfered this config to all DP, basic alert_hld parameters synchronise. Everything but hysteresys.
Can anyone try the same. Maybe I do something wrong...

Tried on 3.14 P005 and 3.13 P006.

Gertjan van Schijndel
Posts:634
Joined: Mon Aug 02, 2010 10:37 am

Re: Hysteresis problem in masterDP

Post by Gertjan van Schijndel »

Which powerconfig are you using? Or did you create your own powerconfig for this?

v_tsolis@akatt.gr
Posts:3
Joined: Mon Apr 18, 2016 12:50 pm

Re: Hysteresis problem in masterDP

Post by v_tsolis@akatt.gr »

Hello.
I have the same problem.
I am trying to write Hysteresis values to a datapoint that i created from a MasterDP and it doesn't work. The Power config that I used is “Alert handling 5 ranges” and I am changing “_alert_hdl..u_hyst_limit.” When I am testing with datapoint that is not generated from a MasterDP it works correctly.

NFedorenko
Posts:45
Joined: Wed Jun 15, 2016 5:41 pm

Re: Hysteresis problem in masterDP

Post by NFedorenko »

I've tried to do the same with ETM official trainer in Russia, and we faced the same problem.
Hysteresis doesn't work in powerconfigs.
:(

mkerk
Posts:75
Joined: Wed Oct 20, 2010 12:25 pm

Re: Hysteresis problem in masterDP

Post by mkerk »

Hello,
Hysteresis is not implemented in the WinCC OA Standard alarmhandling-Powerconfigs.
If you want to use Hysteresis with MasterDP, than you have to create your own PowerConfig or extend an existing one and set the alarm handling attribute "_alert_hdl.._hyst_type", "_alert_hdl.._l_hyst_limit" and "_alert_hdl.._u_hyst_limit" in this config.

BR,
Mousser

v_tsolis@akatt.gr
Posts:3
Joined: Mon Apr 18, 2016 12:50 pm

Re: Hysteresis problem in masterDP

Post by v_tsolis@akatt.gr »

Thank you

6 posts • Page 1 of 1