Allen Bradley 1785-L20E /E PLC-5/20 Ethernet Processor Module

Allen-Bradley 1785-L20E/E PLC-5/20 Ethernet Processor Module

The Allen-Bradley 1785-L20E/E is a PLC-5/20 Ethernet Processor Module designed to integrate seamlessly into industrial automation systems, offering robust control capabilities and efficient network communication.

Key Features

• Memory Capacity: Equipped with 16K words of user memory, facilitating complex program storage and execution.
• Input/Output Support: Supports up to 512 I/O points, accommodating both digital and analog modules for versatile system configurations.
• Communication Interfaces:
  • One dedicated Data Highway Plus (DH+) port for high-speed data exchange.
  • One configurable DH+/Remote I/O port, functioning as either an adapter or scanner.
  • One serial port supporting RS-232, RS-423, and RS-422A standards for flexible device connectivity.
  • One Ethernet port supporting 10/100 Mbps transmission speeds, enabling efficient network communication.
• Programming and Diagnostics: Compatible with RSLogix 5 programming software, offering advanced instruction sets including sequencer, file-handling, diagnostic, immediate I/O, shift register, and program control instructions.
• Power Requirements: Operates with a backplane current load of 3.6A at 5V DC and has a maximum power dissipation of 19W.
• Environmental Specifications: Designed to function within an operating temperature range of 0°C to 60°C (32°F to 140°F) and can withstand a 30G shock and 1G vibration at 10-500 Hz during operation.

Applications

The 1785-L20E/E is ideal for medium-range automation requirements, providing reliable control and communication capabilities in various industrial settings. Its integration of Ethernet/IP protocol allows for seamless connectivity with other networked devices, enhancing system flexibility and scalability.

Installation and Compatibility

This processor module is compatible with 1771 I/O chassis models, including 1771-A1B, -A2B, -A3B, -A3B1, and -A4B. It is installed in the left-most slot of the chassis, occupying a single slot. The module supports various I/O addressing modes, including half-slot, single-slot, and double-slot configurations, allowing for tailored system setups.

In summary, the Allen-Bradley 1785-L20E/E PLC-5/20 Ethernet Processor Module offers a robust and flexible solution for industrial automation, combining substantial memory capacity, versatile communication interfaces, and reliable performance to meet the demands of complex control systems.