Automatic Control Module integration

[MohanadOdema]

Hello,

I want to ask about something concerning the automatic control module;

Is there any possible way to import the trigger parameters into the scheme which I designed for my web page ?

[Mikhail]

Hello,

Please describe your task in details. Why do you need it?

[MohanadOdema]

I have a time trigger for a certain command. I want to be able to change the time settings for this trigger from my Scada web page on a browser directly without the need to access the control module from the Scada Server.

[Mikhail]

In this case you should use another approach:
Create an input channel as a flag and check time in the channel’s formula. Then create a trigger that fires on the flag value.
To change the timer counter according to a command you need an output channel.

[MohanadOdema]

I’m not sure I understood that correctly. Does this flag value represent if the checked time is equal to the real time of my machine ?

I created the channel but how can I check time in a channel’s formula ?

[Mikhail]

Do you need a special time for sending command or just a period of doing it?
How accurately you need to define a time? Is it enough to set hour only or hour and minutes?

[Mikhail]

In formulas you can use DateTime and TimeSpan

[Mikhail]

The simple formula example:

double CheckTime()
{
  DateTime nowDT = DateTime.Now;
  return nowDT.Hour == 1 && nowDT.Minute == 0 ? 1 : 0;
}

[MohanadOdema]

For now I need a special time for sending the coomands.

In my design I want for example at 3:15 open relay switch and 3:30 close relay switch.

And later if I access my scada site I could cchange those times completely.

[MohanadOdema]

I’m sorry but I’m feeling lost with using the formulas. Am I supposed to enter the entire function you stated in the formula space as shown in the screenshot ?

https://www.dropbox.com/s/lh7os44udvtlfuj/formula.png?dl=0

[Mikhail]

I mean that you should enter the whole CheckTime() function in Formulas table. Then enter just CheckTime() in Input channels table.

[MohanadOdema]

That flag channel does not rise to one after several attempts from the code you gave me and even after changing the code and time multiple times.
double CheckTime()
{
DateTime nowDT = DateTime.Now;
if (nowDT.Hour==15 && nowDT.Minute==30)
{return 1;}
else
{return 0;}
}

https://www.dropbox.com/s/su5wakulwacswzs/T1.png?dl=0

I dont know where the problem is and I still don’t know how I’m going to link the output channel to set the hour and minute values to those in the input channel.

[Mikhail]

I didn’t write: you have to change channel type to Calculated real.

[MohanadOdema]

Even after I changed the channel type to calculated real, the channel value never becomes 1. I’ve tried a lot of approaches for the code and different types for the return variable and still nothing happened.

I even tried to use the existing function HourBeg() to see if it would return 1 at the beginning of an hour and it didn’t. I don’t know why none of the functions returns 1.

[Mikhail]

It’s strange. Did you pass the changes to Server and restart Server service?
Try simplifying the formula of an input channel.
First of all, try the formula: 1
Then try: DateTime.Now.Minute

[Author]

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