CompactLogix Dual Serial Processor 1769-L31 Allen Bradley

Product Description

The 1769-L31 is a CompactLogix chassis-less controller optimized for serial communication applications. Featuring two RS-232 serial ports, this processor enables simultaneous programming and peripheral connectivity, supporting devices such as HMIs, barcode scanners, and legacy drives. Ideal for stand-alone machinery or localized control systems, the L31 delivers reliable logic execution without the need for Ethernet networking.

Technical Specifications

Key Features

• Dual Serial Ports: Dedicated channels for programming and peripheral communication.

• Chassis-Less Design: Compact modular footprint for space-constrained control panels.

• Full Logix Functionality: Supports symbolic programming and multitasking for consistent performance across the Integrated Architecture platform.

• Battery-Backed Memory: Retains program and tag data during power loss with the 1747-BA lithium battery.

• Flexible I/O Expansion: Supports up to 16 local I/O modules and 3 I/O banks via expansion cables.

Industrial Applications

• Pump stations and water treatment facilities

• Material handling and conveyor control

• Stand-alone machinery requiring Modbus RTU or DF1 connectivity

• Systems with HMIs or barcode scanners that need dedicated serial communication

Frequently Asked Questions

Q: Does the 1769-L31 support Ethernet/IP?
A: No, this is a serial-only processor. For Ethernet/IP communication, use the 1769-L32E or 1769-L35E.

Q: How many I/O points can it handle?
A: Up to 16 local 1769 modules; the total I/O count depends on the module types used.

Q: Can I use it for motion control?
A: It supports basic motion via local I/O or serial devices but does not support Integrated Motion on EtherNet/IP.