Is there a way to create a "relay" in Lookout

[MarkB 89]

I am looking for way to create a Form "c" type relay in Lookout. I have Lookout connected to a plc. When an output goes high  on the plc i need to control inputs of the plc thru Lookout.

[Khalid]

Hi Mark,

Unless I am missing something, this can be done with the following Connections.  Let's say we're using the Modbus PLC; and that Coil 1 is the Output from the PLC, and Coils 2 and 3 are the Inputs to the PLC (controlled by Lookout).  The following two connections should implement the Form C relay:

MyModbus.2 = MyModbus.1

MyModbus.3 = !MyModbus.1

Note the exclamation sign in the second connection -- for negation.  So, whenever MyModbus.1 (Output from the PLC) goes high, Coil 2 is turned On and Coil 3 Off.  And when MyModbus.1 goes low, Coil 2 is turned Off, and Coil 3 On. 

Is this what you were looking for?  Please write back if I misunderstood your query.

Regards,

-Khalid

[MarkB 89]

Kahlid

Thank you

That is exactly what i was looking for. I was trying to do it with expressions, not even thinking of doing it with just connections

Thanks again