[Mikhail]

Could you provide screenshots that explain the question?

[Mikhail]

Probably channel data is not ready when InitScripts is called.
What kind of channels do you need to initialize?

[Mikhail]

For a channel of the input type it depends on Communicator.
The Communicator app sends data to Server after each session and every period (60 seconds by default).

[Mikhail]

If you use some variables in your scripts, you can initialize them in the InitScripts method, for example. It is called once when Server starts.

[Mikhail]

You can call the HourStarted function inside your own custom functions. It is auxiliary.

[Mikhail]

The CountPulse function should be used in a channel of the calculated type. It should refer another channel. If the 2nd channel changes from 0 to >0, the 1st channel is increased. Check the source code in the Scripts table.

[Mikhail]

EveryXXX function is executed many times a second. When a time is elapsed, the method passed as an argument is executed. Find the source code of the EveryPeriod function in the Scripts table.

[Mikhail]

Hello,
Please ask questions in proper different topics.

[Mikhail]

Thank you for your thoughts.

Item 2. You can. Try Ctrl + C.
Items 1 and 3 have been added to the back log.

[Mikhail]

When a command is sent, an output formula of the channel is executed. In that output formula you can write a value to the channel as discussed above.

[Mikhail]

Note that executing external scripts is not secure. They can hang, or can be modified by an intruder. It’s better to interact with other services via API or industrial protocols.

[Mikhail]

Hello,
The general algorithm is as follows:
1. Send a command via the web interface.
2. In a channel, use an output formula that executes a script.
3. As shown above, the channel’s output formula should run a command like Process.Start(@"C:\SCADA\1.bat");

Ask for more details if needed.

[Mikhail]

It means exception throw in OpcNetApi.dll. Maybe OpcNetApi.dll not implement the requirement interface(IOPCServerList2, I found project B implement and it doesn’t use OpcNetApi.dll)?

Sometimes it’s possible. If an OPC server implements not all required interfaces, some OPC clients work with it, others don’t work.

[Mikhail]

Hello,
Please provide a screenshot of the error.

[Mikhail]

Where do I have to enter the program call so that it can be called by the UI? In views? How?

If you need to execute some external app from the web interface, there should be another approach. Please create a new topic to discuss it.

[Author]

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