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
Glossary
Appendix D
D-12
Ladder Diagram
An industry standard for representing control systems.
Ladder Diagram Programming
A method of writing a user program in a format similar to a relay
ladder diagram.
Language
A set of symbols and rules used for representing and
communicating information.
Latching Relay
A relay that maintains a given position by mechanical or electrical means
until released mechanically or electrically.
Leading Edge One-Shot
A programming technique that sets a bit for one scan when its input
condition has made a false-to-true transition. The false-to-true transition
represents the leading edge of the input pulse.
Least Significant Bit (LSB)
The bit that represents the smallest value in a nibble, byte, or word.
Least Significant Digit (LSD)
The digit that represents the smallest value in a byte or word.
LED
Light-Emitting Diode.
LED Display
An illuminated visual readout composed of alphanumeric character
segments.
Limit Switch
An electrical switch actuated by some part and/or motion of a machine
or equipment.
Line
(1) A component part of system used to link various subsystems located
remotely from the processor. (2) The source of power for operation.
Example: 120V ac line.
Liquid Crystal Display (LCD)
A reflective visual readout of alphanumeric characters. Since its character
segments are displayed only by reflected light, it has extremely low power
consumption. Contrasted with LED Display, which emits light.
L