Alfa20ad

I have used the SCP command on the 1769-L24ER-QBFC1B CompactLogix plc. I get the scaled with parameters command working with the 1769-IF4 module (wire connections Iin0+ & V/I in 0-) but when i connect my source into the actual plc itself it does not work. I seem to get the value of.... 2#0000_0000_0000_0000 in the input field. I am setting the input connection as.... Local:2:I.Ch0Data Also i have ticked the boxes on the Embedded Analog_IO all to read 4 - 20mA. Anyone have any ideas what i am doing wrong?

Looking for an instruction to say that the PLC is healthy. That is all.

I can see it change now. Thanks. Just one other thing what instruction would i use to say if this input reaches say 5mA then energise an output.

Done that, but still i can see the input increasing and decreasing but the output value stays at 0.0.

One other thing. Does the Allen-Bradley have a function similar to the P_On function like the Omron version?

Will give it a try. Thanks.

This is the first page.

What do you mean by not calling the routine. Can this image help?

As file attached C17941newprogamme.ACD

Sorry, Totally new to PLC programming. My question is that i have a 4-20mA input into a 1769-IF4 card, i have connected my 4-20mA input into V/I in 0- and I in 0+ When i write the SCP command for this input and go online the instruction can see the input change as i vary the 4-20mA signal but i cannot see the output side change as i do this on the function block What am i doing wrong? Also how would i achieve when the mA signal reaches a certain setpoint, this then triggers an output?