Product Details
Overview
The Allen-Bradley 1785-L40E is a PLC-5/40E Ethernet/IP controller engineered for high-performance industrial automation and process control.
It provides robust communication, advanced data handling, and reliable system integration within PLC-5 networks.
Designed for complex automation tasks, this processor supports large I/O counts, multiple communication interfaces, and seamless connectivity with remote I/O systems.
Technical Specifications
• Manufacturer: Allen-Bradley
• Product Line: PLC-5 Series
• Model Number: 1785-L40E
• Product Type: Programmable Logic Controller (PLC)
• Processor Type: PLC-5/40E
• Memory Capacity: 48 KWords
• Battery Type: 1770-XYC (for memory retention)
• EEPROM Backup Support: Yes (supports 1785-ME16, -ME32, -ME64, -M100)
• Embedded Communication Interfaces:
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4 DH+/Remote I/O channels (Adapter or Scanner)
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1 Serial Port (RS-232/RS-422A/RS-423 configurable)
• Maximum Total I/O: 2048 (any mix) or 2048 in + 2048 out (complementary)
• Maximum Analog I/O: 2048
• I/O Scan Time (per rack):
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10 ms at 57.6 kbit/s
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7 ms at 115.2 kbit/s
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3 ms at 230.4 kbit/s
• I/O Link Capacity: Up to 32 per link
• Expansion Capacity: Supports 61 local and 60 remote I/O chassis
• Memory Type: Battery-backed static RAM
• Protected Memory: Not supported
• Power Dissipation: 17.3 W
• Backplane Current Load: 3.3 A
• Power Supply Compatibility: 1771-P4S, -P6S, -P4S1, -P6S1
• Operating Temperature Range: 0°C to 60°C (32°F to 140°F)
• Non-Operating Temperature Range: -40°C to 85°C (-40°F to 185°F)
• Weight: 1.36 kg (3.00 lbs)
Features
• EtherNet/IP Connectivity: Provides fast and secure communication between controllers, I/O, and supervisory systems.
• Scalable Architecture: Supports up to 2048 I/O points with modular expansion.
• High Reliability: Industrial-grade design ensures stability under temperature variations and harsh conditions.
• Flexible Communication: Multiple serial and DH+/Remote I/O ports enhance system integration.
• Modular Power Supply Support: Compatible with various 1771 series power modules for flexible configuration.
• Efficient Memory Management: 48K word capacity for large-scale automation programs.
Applications
The Allen-Bradley 1785-L40E controller is widely used in:
• Manufacturing automation lines
• Process control in oil, gas, and chemical industries
• Power generation and energy systems
• Material handling and logistics
• Water and wastewater treatment facilities
FAQ
Q1: What type of processor is the 1785-L40E?
A1: It is a PLC-5/40E processor with Ethernet/IP capability.
Q2: What communication interfaces does it support?
A2: The module supports DH+/Remote I/O and serial communication (RS-232/422A/423).
Q3: How much user memory is available?
A3: The controller offers 48 KWords of memory.
Q4: Is EEPROM backup supported?
A4: Yes, via 1785-ME16, -ME32, -ME64, and -M100 memory modules.
Q5: What power supplies are compatible with this model?
A5: It is compatible with 1771-P4S, -P6S, -P4S1, and -P6S1 supplies.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.
Mastering PLC Power Supply Architectures and Operating Voltages
Selecting the correct operating voltage is a critical step in designing reliable industrial automation systems. Whether you are working with a compact PLC or a large-scale DCS, your power architecture dictates the system's longevity. In this guide, we explore the standard voltage ranges and power distribution strategies required to maintain stable factory automation operations.
Optimizing Power Supply Sizing for Industrial Automation Systems
The power supply is the silent heartbeat of any industrial automation system. While engineers often prioritize processors and communication protocols, a stable power architecture remains the most critical factor for long-term reliability. In my 15 years of experience, I have found that neglecting power supply sizing often leads to ghost errors, intermittent field device failures, and costly production downtime.