User Manual Owner's manual
Table Of Contents
- 1772-6.5.8, Mini-PLC-2/02, -2/16, -2/17 Processor, User Manual
- Important User Information
- Summary of Changes
- Table of Contents
- 1 - Using This Manual
- 2 - Fundamentals of a Programmable Controller
- 3 - Hardware Features
- 4 - Installing Your Programmable Controller
- 5 - Starting Your Processor
- 6 - Maintaining and Troubleshooting Your Processor
- 7 - Memory Organization
- 8 - Scan Theory
- 9 - Relay-Like Instructions
- 10 - Program Control Instructions
- 11 - Timers and Counters
- 12 - Data Manipulation and Compare Instructions
- 13 - Three-Digit Math Instructions
- 14 - EAF Math Instructions
- 15 - EAF Log, Trig, and FIFO Instructions
- 16 - EAF Process Control Instructions
- 17 - Jump Instructions and Subroutines
- 18 - Block Transfer
- 19 - Data Transfer Instructions
- 20 - Bit Shift Registers
- 21 - Sequencers
- 22 - Selectable Timer Interrupts
- 23 - Report Generation
- 24 - Program Editing
- 25 - Programming Techniques
- 26 - Program Troubleshooting
- A - Specifications
- B - Processor Comparison Chart
- C - Number Systems
- D - Glossary
- E - Quick Reference
- Index
- Back Cover

Programming Technique
Chapter 25
25-7
Here is an explanation of each rung:
Rung 1: The Get instruction at address 201 multiplies the value of
100
o
C by 9 and stores 900 at address 203.
Rung 2: The Get instruction at address 204 divides 5 into 900 and
stores the quotient, 180, in address 205.
Rung 3: The Get instruction at address 207 adds 32 to the value
180 which is located at get addresses 205. The sum of 212
is stored at address 210. Thus 100
o
C = 212
o
F.
Rung 4: If the displayed temperature is less than 190
o
F, the timer
initiates timing for three seconds.
Rung 5: If three seconds have elapsed, an output at address 011/15
will energize a heating device which will bring the
temperature back into the desired range.
Rung 6: Counter 034 counts the number of times the value falls
below 190
o
F. Therefore, when rung 4 is true the
counter increments.
Rung 7: When the temperature equals 212
o
F latching 011/16
enables an alarm.
Rung 8: To shut the alarm off, unlatch 011/16. To do this, an
operator would press a pushbutton connected to
address 011/16.
Application
T
wo (
o
C to
o
F Every Five Seconds)
This application is similar to application one, but we are only recording the
converted temperature reading every five seconds (Figure 25.7).