Allen-Bradley 1785-L40E PLC-5 Controller – High-Speed

Allen-Bradley 1785-L40E PLC-5/40E Ethernet Programmable Controller

The Allen-Bradley 1785-L40E is a powerful PLC-5 processor for medium to large automation tasks. It connects with many devices and networks easily.

🔧 Technical Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1785-L40E (PLC-5/40E)
• Memory: 48K Words Battery-Backed RAM
• Max I/O: 4096 (2048 Inputs + 2048 Outputs)
• Ethernet: 10/100 Mbps, TCP/IP Protocol
• Serial Port: RS-232 / RS-422 / RS-423
• DH+/RIO Ports: 2 Ports (Adapter/Scanner)
• Power Draw: 3.3A @ 5V DC (Backplane)
• Operating Temp: 0°C to 60°C (32°F – 140°F)
• Weight: 3.0 lbs (1.38 kg)
• Certifications: UL, CE, CSA, C-TICK

📦 Packaging List

• 1 x 1785-L40E Processor Module
• 1 x 1770-XYC Battery (Pre-installed)
• 1 x Quick Start Guide

📦 Shipping via FedEx, UPS, DHL | 🛡️ 12 Months Warranty

🛠️ Compatibility & Usage

• Fits 1771-A1B, A2B, A3B, A3B1, A4B chassis
• Use with 1771-P4S, P6S, P4S1, P6S1 power supplies
• Supports 8pt, 16pt, 32pt, and intelligent I/O modules
• I/O scan time as low as 0.5ms (extended-local)
• Works with up to 61 I/O chassis (1 local + 60 remote)

❓ Frequently Asked Questions

• What networks can the 1785-L40E use?
  It supports Ethernet, DH+, Remote I/O, and serial networks.
• Can I use this PLC for PID control?
  Yes, it supports PID and other advanced control functions.
• How is the program stored without power?
  It uses a battery-backed RAM and optional EEPROM modules.
• What is the maximum number of I/O racks?
  You can connect up to 16 I/O racks with this controller.
• Is the 1785-L40E suitable for harsh environments?
  It operates reliably in industrial settings from 0°C to 60°C.

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