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check variables while write before excepting in the PLC

Borje
Member

check variables while write before excepting in the PLC

Hi

I have tried to publish variables to the datalayer from the PLC and it works just fine👍. But I am looking for a functionality in the PLC which is similar to the "onWrite" function in the SDK for C/C++. When a user tries to write a value to the datalyer I want to make some sanity checks before I accept the new value in the PLC. Is it possible to solve somehow in the PLC?

1 REPLY 1
LiuPengfei
Member

Re: check variables while write before excepting in the PLC

Maybe you can try plc library: CXA_Datalayer. You can use DL_WriteNode to write value to a datalyer.

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