Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual - Manual (Page 20)

Chapter
2
2-1
Choosing Hardware
Use this chapter to guide you in the selection of system hardware for
your application.
To select: Go to page:
I/O modules 2Ć1
I/O adapters 2Ć4
Chassis 2Ć6
Operator interface 2Ć6
PLCĆ5 processor 2Ć9
Power supplies 2Ć9
Memory modules 2Ć13
Batteries 2Ć13
Complementary I/O 2Ć13
Backup system 2Ć14
Termination resistor 2Ć15
Cables 2Ć15
You select I/O modules to interface your PLC-5 processor with machines
or processes that you have previously determined.
Use the following list and Table 2.A as guidelines for selecting I/O
modules and/or operator control interface(s).
How much I/O is required to control the process(es)?
Where will you concentrate I/O points for portions of an entire process
(when an entire process is distributed over a large physical area)?
What type of I/O is required to control the process(es)?
What is the required voltage range for each I/O module?
What is the backplane current required for each I/O module?
What are the noise and distance limitations for each I/O module?
What isolation is required for each I/O module?
Chapter Objectives
Selecting I/O Modules
System Design
Determined
Choosing
Communication
Transferring Discrete
and Block Data
Planning Your
System Programs
Calculating Program
Timing
Assigning Addressing
Mode, Racks,
and Groups
Placing System
Hardware
Choosing Hardware
Selecting Interrupt
Routines