Overview

The Allen-Bradley 1785-L40C15 is a PLC-5/40C programmable logic controller (PLC) processor designed for industrial automation and process control applications. As part of the PLC-5 ControlNet family, this processor combines powerful control capabilities with integrated ControlNet communication, making it suitable for distributed control architectures and large-scale automation systems.

The processor supports up to 48K words of user memory and can manage up to 2048 I/O points. It features multiple built-in communication interfaces including ControlNet, Data Highway Plus (DH+), Remote I/O (RIO), and serial communications, providing excellent flexibility for integrating both legacy and modern automation systems.

The 1785-L40C15 is widely used in power generation, oil & gas, water treatment, manufacturing, mining, and process industries where reliable and high-performance control systems are required.

Features

Integrated ControlNet Communication

Supports dual ControlNet network connectivity for high-speed industrial communication and distributed control applications.

Large Memory Capacity

Provides up to 48K words of controller memory for complex automation programs and data handling.

Extensive I/O Support

Capable of handling up to 2048 I/O points across local and distributed I/O systems.

Multi-Protocol Connectivity

Supports ControlNet, DH+, Remote I/O (RIO), and serial communications for flexible system integration.

Redundancy Capability

Compatible with hot backup configurations using the 1785-CHBM ControlNet Hot Backup Memory Cartridge. 

Specification	Details
Product Name	Allen-Bradley 1785-L40C15
Product Type	PLC Processor Module
Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Series	PLC-5/40C ControlNet
Function	Logic Processing & System Control
Controller Memory	Up to 48K Words
Maximum I/O Capacity	2048 I/O Points
Communication Ports	ControlNet, DH+, RIO, Serial
ControlNet Ports	2
Installation	1771 I/O Chassis (Left-most Slot)
Memory Backup	EEPROM / Memory Module Supported
Redundancy Support	Yes
HS Code	8537101190
Dimensions (L × W × H)	Approx. 26.3 × 13.8 × 8.8 cm
Weight	Approx. 2.35 kg
Country of Origin	United States
Condition	Brand New & Original
Availability	In Stock
Shipping	Worldwide Delivery
Warranty	Available Upon Request

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