Allen Bradley 1772-LX PLC 5 Mini Processor,

The Allen-Bradley 1772-LX is a Mini-PLC-2/16 processor designed for industrial automation and process control applications. Manufactured by Rockwell Automation, the 1772-LX serves as the central processing unit of the Allen-Bradley PLC-2 control system, delivering reliable processing performance, flexible programming capability, and efficient data handling for industrial operations.

The 1772-LX processor features 4000 words of backup EEPROM memory, 4000 words of general memory, and 3968 words of expandable data table memory. It supports a wide range of Enhanced Arithmetic Functions (EAF), including advanced mathematical, conversion, and data handling instructions such as SIN, COS, LOG, FIFO operations, and BCD conversions. The processor combines CPU functionality and internal memory storage to execute user-developed ladder logic programs and manage industrial control processes efficiently.

The module also includes diagnostic indicators, a memory backup battery system, and a multi-position key switch for flexible operating mode selection. Its 15-pin INTFC communication port allows easy integration with programming terminals, report generation modules, communication interfaces, and other Allen-Bradley industrial automation components.

Manufacturer

Allen Bradley

Category

PLCs

Product Line

PLC 5

Part Number

1772-LX

Output

4 Amperes at 5 Volts DC

Screw Torque

7-9 lb*in

Typical Application

10-32 Volts DC, Digital

Coating

Conformal Coat

Required External Power

None

Typical AC Signal Delay (Off)

29 (+/- 8) ms

Typical DC Signal Delay (Off)

30 (+/- 7) ms

Wiring Arm

1771-WN

Integrated CPU and Memory

Combines processing and memory management for efficient control operations

Large Memory Capacity

Includes 4000 words EEPROM backup memory and 4000 words general memory

Expandable Data Table

Supports 3968 words of data table expansion

Advanced Arithmetic Functions

Supports SIN, COS, LOG, SQRT, FIFO, BCD conversion, and arithmetic instructions

Ladder Logic Programming

Compatible with Allen-Bradley ladder logic programming systems

EEPROM Backup Capability

Allows secure program backup and memory retention

Diagnostic Status Indicators

PROC and BATT indicators simplify monitoring and troubleshooting

Flexible Operating Modes

Features PROG, R/P, RUN, and MEM STORE key switch positions

Communication Interface

Equipped with a 15-pin INTFC connector for programming and communication

Broad System Compatibility

Compatible with various Allen-Bradley programming and communication devices

Question

Answer

What is the primary function of the Allen-Bradley 1772-LX?

The 1772-LX acts as the central processor and memory management unit for Allen-Bradley PLC-2 industrial automation systems.

What memory capabilities does the 1772-LX provide?

The processor includes 4000 words of EEPROM backup memory, 4000 words of general memory, and 3968 words of expandable data table memory.

Does the 1772-LX support advanced mathematical instructions?

Yes. It supports Enhanced Arithmetic Functions including SIN, COS, LOG, SQRT, FIFO operations, and BCD conversions.

What is the purpose of the MEM STORE switch position?

The MEM STORE position allows users to transfer and back up programs into the EEPROM memory module.

Which devices are compatible with the 1772-LX communication interface?

The processor is compatible with devices such as the 1784-T50, 1770-T3, 1770-T11, 1770-RG, 1772-KG, and 1771-KA modules.

1794-IB16XT

2711-K6C8

1492-IFM40F

2711-K6C9L1

1769-L18ERM-BB1B

2711P-B6M20D

1747-PIC

2711P-K4M20A

1766-L32BXB

2711P-K4M20D

1746SC-CTR4

2711P-K6C20A

1770-KF2

2711P-K6C5D

1746-HSCE

2711P-T6C20A

1788-EN2DN

2711P-T6M20A

1756-HSC

2711P-T6M5D

80190-300-01-R

2711PC-T10C4D1

80190-600-01-R

2711P-T6M20D

80190-220-01-R

2711-B6C5

80190-100-01-R

2711P-T6C5A

20AD3P4A0AYNNNC0

2711P-K4M5D

2085-IF4

2711P-T10C22D9P

25B-D010N104

2711P-B6C20A

1606-XLP100E

2711-K5A5X

PM3398B-6-1-3-E 80026-172-24

2711-T10G9

PM3398B-6-1-3-E 80026-172-24 80026-172-24-R

1771-OFE2