1785-L20B | Allen Bradley | PLC-5/20 Processor Module

Product Description

The Allen Bradley 1785-L20B is a PLC-5/20 processor module designed to provide reliable control for industrial automation systems. This processor delivers robust performance, extensive I/O capacity, and versatile communication options, making it suitable for complex process control environments.

Technical Specifications

• Product Type: Processor module

• PLC Family: PLC-5/20

• Part Number: 1785-L20B

• Memory Capacity: 16 K words SRAM maximum

• I/O Capacity: 512 inputs and 512 outputs

• Communication Ports:

• 1 Data Highway Plus

• 1 Data Highway Plus / Remote I/O

• 1 Serial port (RS-232/423/422A)

• Power Dissipation: 12 W

• Backplane Current Draw: 2.3 A

• Memory Words: 16 kilowords

• Dimensions: 27.9 cm × 5.1 cm × 17.8 cm (11.0 in × 2.0 in × 7.0 in)

• Weight: 1.0 kg (2 lbs 5 oz)

• Category: PLCs / Machine Control

• Subcategory: PLC Module / Rack

Application Scenarios

• Industrial Process Control: Suitable for large-scale automation systems requiring high I/O capacity

• Legacy System Support: Compatible with existing Allen Bradley PLC-5 installations

• Manufacturing Plants: Provides reliable control for machinery and production lines

• Complex Automation Projects: Ideal for systems requiring multiple communication interfaces

FAQ

Q: What PLC family does the 1785-L20B belong to?  A: It is part of the PLC-5/20 family.

Q: How many I/O points can this processor handle?  A: It supports up to 512 inputs and 512 outputs.

Q: What communication options are available?  A: It includes Data Highway Plus, Data Highway Plus/Remote I/O, and a serial port (RS-232/423/422A).