READ_VAR Output

[Gville]

I am working on a project with two M340 PLCs and need to read a Real type data point into my PLC from the other. I have setup my READ_VAR block to do this, but I'm having trouble understanding the form of the output. I get that a Real type takes two registers and that each register will be read into a part of an Int Array through the READ_VAR block, but how can I now convert it back into a Real so I can use it in my logic? This is just a fundamental thing that I can't get my head around, maybe I've already read the answer somewhere online but it isn't making sense to me.

This also needs to read an updated value every second because it is being used for an interlock. Do I use a TP to enable the READ_VAR this way?

[cHud]

This should clarify your problem

https://www.schneider-electric.com/en/faqs/FA194533/

 

Is the read var block working? And yes you should use the en pin to trigger the read. In the manage variable there are bits to show if the read was successful or not