Problem getting decimal value to ineger file using NI8

m using AB SLC-500 PLC and the processor is SLc 5/03.i want to implement the PID control on the bytronic inverted pendulum using this PLC.As a start,i m trying to understand the analog I/O's.i selected the range from 0v-10v from configuration and selected the channel-1,activated the channel and pressed ok.then the COP instruction appears on the Ladder program on its own.i applied the voltage from power supply to 0+ terminal of NI8.and varied the power.before this i used the SCP instruction in the manner
input I:4.0
inputmin 0
inputmax 32767
scaledmin 0
scaledmax 100
output N7:10
but no value i examined to be coming in the N:7 file.if any one can help me plz reply me very soon.

zahidraza1212 said:

the COP instruction appears on the Ladder program on its own.

Click to expand...

?????

post a copy of your program

The COP instruction is usually placed automatically when you have completed configuration of your module (Channel Enable/Data Type etc.) and writes all of the parameters on the first pass to your card.

Hope this helps.


Rob

Look through the installation / user manuals for the 1746-NI8 module to ensure you have the module wired and configured properly.


Page 10 of the intallation manual goes through the different wiring methods:
http://literature.rockwellautomation.com/idc/groups/literature/documents/in/1746-in006_-en-p.pdf


Page 42 of the user manual describes the channel configuration:
http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1746-um020_-en-p.pdf

i have posted the .RSS file already.i will try tomorrow by examining the dip switches in the card.i think if their position is not right.thanks Blamb,Kidblue,Jstolaruk, and others for giving me useful directions.