How to reset Channel Value on re-boot?

[CCKOH]

Hi Manjey / Mikhail,

I need to reset the channel value to 0 every time the SCADA server is rebooted. I have configured the channel as follows:

Channel Type: Calculated/output
Object: Enterprise
Device: Simulator
Formula
In: Stat() > 0 ? Data() : NewData(0, 1)
Out: SetVal(CnlNum, Cmd)

However, the channel value does not reset to 0 when I reboot the computer or restart the SCADA server. Instead, it retains the value I entered through the command window. Do you have any suggestions on how to ensure that the channel value is reset to 0 upon rebooting the computer or restarting the SCADA server?

[Mikhail]

Hi,
Try the following:
In the Scripts table, insert
SetData(101, 0, 1);
into InitScripts() which is a record #1.
Let me know it it works or not. I haven’t tested it.

[Mikhail]

101 is a channel to reset.

[CCKOH]

Hi Mikhail,

Thank you for your prompt reply.
Unfortunately, the method is not working.
I also tried using SetVal(109, 0), but that is not working either.
Additionally, I moved the code to FinalizeScripts(), but that is still not working.

[manjey73]

Doesn’t the absence of an input formula lead to this result?

[CCKOH]

Hi Manjey,

I’m need to use the input formula to get the sensor reading for my calculation.
When the system is shutdown, the calculation results need to be reset.

Regards,
CC Koh

[Mikhail]

Hi,
Try another solution.
In the Scripts table, declare a variable:
public double MyVal = double.NaN;

In the input formula of the channel use:
MyVal

Variables are not stored in archives.

[Mikhail]

So set the channel, the output formula would be SetTempData()

public double SetTempData()
{
  MyVal = CmdVal;
  return CmdVal;
}

[CCKOH]

Hi Mikhail,

Thank you very much for your help, this method is working perfectly.

[Mikhail]

🙂

[Author]

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