1785-L40E Product datasheet  

1785-L40E Functional Description

The Allen-Bradley 1785-L40E CPU Module is a powerful Programmable Logic Controller (PLC) designed for medium to large industrial applications. Installed in a 1771 chassis, this PLC acts as a central hub, distributing power and facilitating communication across multiple modules. The Allen-Bradley 1785-L40E CPU Module is compatible with various chassis models like 1771-A1B and 1771-A3B1, and it requires power supplies such as 1771-P4S or 1771-P6S. With a current draw of 3.3A and power dissipation of 17.3W, this controller offers excellent reliability for demanding environments.

The Allen-Bradley 1785-L40E CPU Module features multiple communication ports, including two Data Highway Plus (DH+) / Remote I/O (RIO) combination ports, one serial port supporting RS-232, RS-423, and RS-422A, and one Ethernet port for high-speed 10/100 Mbps data transmission. These ports ensure seamless integration with visualization systems, PLC5 controllers, and other Allen-Bradley devices, enabling the Allen-Bradley 1785-L40E CPU Module to support diverse industrial protocols.

This PLC supports a range of programming languages as per the IEC 61131-3 standard, including Ladder Logic, Sequential Function Chart (SFC), and Structured Text (ST). The Allen-Bradley 1785-L40E CPU Module excels in controlling both discrete and analog devices, executing advanced control algorithms like PID, and performing signal conditioning, making it ideal for complex automation tasks.

Equipped with 48KB of memory, the Allen-Bradley 1785-L40E CPU Module can handle up to 2048 I/O points. It supports up to 61 I/O chassis, with scan times as low as 0.5ms for extended-local I/O adapters. The Allen-Bradley 1785-L40E CPU Module is rugged, certified for CSA, C-TICK, CE, and UL standards, and operates in a temperature range of 0-60°C, making it suitable for harsh industrial settings.