[?]: как отобразить PQW в VARIABLE TABLE ,

Промышленные Логические Контроллеры SIMATIC S7-200/300/400
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neRaB
Posts: 22
Joined: Mon Dec 07, 2009 1:52 pm

[?]: как отобразить PQW в VARIABLE TABLE ,

Post by neRaB » Mon Dec 07, 2009 2:18 pm

PLEASE !!!!
помогите с настройкой Variable table !
по какой то причине не отображаються PQW .....

В чем может быть дело ?! :?:

Umencho
Posts: 508
Joined: Mon Jul 16, 2007 12:28 pm
Location: Europe

Re: [?]: как отобразить PQW в VARIABLE TABLE ,

Post by Umencho » Mon Dec 07, 2009 8:35 pm

I'm afraid neither VAT monitoring nor "Load" access in the logic is possible with peripheral Outputs (i.e PQB, PQW or PQD).
What you can do though is this:
Check if your Ananlogue output addresses are inside the PIQ (Process Image Outputs).
The (default) size of the PIQ depends on the CPU that you use (its size can be found in the the technical spec of teh CPU) and can be changed for most CPU's.
If they are either already inside the PIQ or you can increase the PIQ to have them inside, then you can change your logic to write to a QW instead of a PQW and will be able to monitor its value in a VAT.
Or in alternatively, write the Analogue Output value in your logic first to a MW or DBW and then copy it tfrom there to a PQW (you can monitor the MW or DBW...).
Regards,
Umencho

neRaB
Posts: 22
Joined: Mon Dec 07, 2009 1:52 pm

Re: [?]: как отобразить PQW в VARIABLE TABLE ,

Post by neRaB » Tue Dec 08, 2009 7:44 am

thank you for help man !!!! :idea: :)

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