A - additional ladder program exercises, Entering input and output branches, Additional ladder program exercises – Rockwell Automation 1747-PTxx Getting Started Guide for HHT User Manual

Page 48

A–B

Appendix

Getting Started Guide

for HHT

A–1

Additional Ladder Program Exercises

This appendix lets you apply what you have learned in the previous chapters.
It covers:

•

Entering a program with input and output branches

•

Entering a program with a timer instruction

The important feature of this program is the output and input branch. The
input branch is based on what is called OR or parallel logic. This means that
if either input #0 OR input #1 is true, then output #0 and #1 turn on. If the
rung is true, all outputs will be energized. If the rung is false, all outputs will
be de–energized.

We will be editing the program created in chapter 3 to look like the one
shown in the display below. It will consist of one input branch and one
output branch.

<END>

] [

( )

] [

( )

I:1/1

I:1/0

O:3/1

O:3/0

Creating the Program

1. Start from the main display, which you ended with in chapter 4, Online

Operations.

SLC 500 PROGRAMMING SOFTWARE Rel. 2.03

1747 – PTA1E

PRESS A FUNCTION KEY

SELFTEST

TERM PROGMAINT

OFL
UTILITY

2. Press the following function keys (in order):

[F3] – PROGMAINT

, then

[F3] – EDT_FIL

3. Enter the file number, which is

. Then press

[ENTER]

. The program

entered in chapter 3 is displayed.

2.0.0.0.*

INS_RNG MOD_RNG SEARCH

DEL_RNG UND_RNG

OFL

<END>

] [

( )

Entering Input and Output
Branches