Chapter
1
Publication 17946.5.2 - May 1996
Overview of FLEX I/O and your
Analog Modules
In this chapter, we tell you about:
•
what the FLEX I/O system is and what it contains
•
types of FLEX I/O analog modules
•
how FLEX I/O analog modules communicate with programmable
controllers
•
the features of your analog modules
FLEX I/O is a small, modular I/O system for distributed
applications that performs all of the functions of rack-based I/O. The
FLEX I/O system contains the following components shown below:
Adapter
Terminal Base
I/O Module
20125
I V I V I V I V
5
I
V
I
V
•
adapter/power supply – powers the internal logic for as many as
eight I/O modules
•
terminal base – contains a terminal strip to terminate wiring for
two- or three-wire devices
•
I/O module – contains the bus interface and circuitry needed to
perform specific functions related to your application
Chapter Objectives
The FLEX I/O System