Sending a heartbeat signal

[hybrid]

Hi there,

I’ve got an command set up for a modbus device. I can manually execute the command successfully.
It is a heartbeat signal that must change from 0 to 1 every second for communication to work.

How can I automate the command to constantly execute ( write 0/1 to modbus register).
I do not want to have to initiate the heartbeat signal if possible, but always have it running in the background.

[Mikhail]

Hi,

You should create an input channel that changes every second, for example: DateTime.Now.Second % 2 and use Automatic Control Module with on change trigger to send a command.

[hybrid]

Thanks for reply. So is there no option to do this without purchasing the control module ?

[Mikhail]

Create your own simple module.

[Author]

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