Internal variables

[teleco]

I have defined an internal variable (Input channel: switching counter), in order to follow the number of cycles. The issue is that when I connect to SCADA-Web, the variable doesn´t reset, it starts from the last value of the previous connection. I have deleted all the database: ArchiveDAT and ArchiveDATCopy. However, the problem remains.

As this tag is internal, doesn´t depends on any OPC or Modbus variable, I think that the function is a little different. How can I reset internal tag?

I would like to create a button on my scheme that executing it reset automatically the mentioned tag. I have tried doing on Formula field of the output channel (lets call “RESET”): Val(cycles)=0, but restarting SCADA-Server it says that the formula is not correct.

Which is the correct procedure?

Thank you in advance.

[Mikhail]

Hello,
You can reset this kind of value by using Generator of SCADA-Server. But it is not suitable for your case. I think the best way of implementing the functionality you need is defining your own formula that calculates switching and supports reset.

[Author]

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