Allen-Bradley MicroLogix 1200 Reference Manual

Publication 1762-RM001C-EN-P
Glossary 3
encoder
A device that detects position, and transmits a signal representing that
position.
executing mode
Any run or test mode.
false
The status of an instruction that does not provide a continuous logical
path on a ladder rung.
FET
Field Effect Transistor. DC output capable of high-speed operation.
FIFO (First-In-First-Out)
The order that data is stored and retrieved from a file.
file
A collection of data or logic organized into groups.
full-duplex
A mode of communication where data may be transmitted and received
simultaneously (contrast with half-duplex).
half-duplex
A mode of communication where data transmission is limited to one
direction at a time.
hard disk
A storage device in a personal computer.
high byte
Bits 8 to 15 of a word.
housekeeping
The portion of the scan when the controller performs internal checks and
services communications.
input device
A device, such as a push button or a switch, that supplies an electrical
signal to the controller.
input scan
The controller reads all input devices connected to the input terminals.
inrush current
The temporary surge of current produced when a device or circuit is
initially energized.

Allen-Bradley MicroLogix 1200 Specifications

General

Series	MicroLogix 1200
Type	Programmable Logic Controller (PLC)
Mounting	DIN rail or panel mount
Programming Language	Ladder Logic
Programming Software	RSLogix 500
I/O Points	Up to 40
Communication Ports	RS-232, RS-485
Memory	6 KB user memory
Power Supply	24V DC or 120/240V AC
Expansion	Supports expansion I/O modules
Operating Temperature	0°C to 55°C (32°F to 131°F)
Dimensions	90 mm x 110 mm
Weight	0.5 kg (1.1 lbs)