analog control

hi every one ,
how can i use an analoge sensor with plcs & what kind
of instruction's are usualy used?

a few info will be ok/..........

You will use compare type instructions. The value from the analog device will be an integer.

Deke

This is a rather open ended question. If this is for a class, I suggest you look at your text. If this is for an indusrial appication, I suggest you look at the documentation for the anaolg input and output modules for the specific brand of PLC you are using. This should have both wiring diagrams and program samples. Another good source is: http://claymore.engineer.gvsu.edu/~jackh/books/plcs/chapters/plc_analog.pdf