Comparing two values with using formula

[ibrahim eren]

Hello,

I want to compare a value entered through the scheme with a value read from a Modbus RTU device. If the entered value is greater than the read value, I want relay number 1 to activate; if it is smaller, I want the relay to deactivate or write a specific value to the holding register. How can I achieve this?

Thank you.

[Mikhail]

Hello,
You need to add a new channel of the calculated type with a formula
Val(101) > Val(102) ? 1 : 0
where 101 and 102 the channels to compare.
Then use Automatic Control Module to send command according to the value of the added channel.

If you have questions during the implementation of the above solution, send screenshots of your settings.

[ibrahim eren]

Thanks Mikhail.

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