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

Product Introduction

The Allen Bradley 1785-L20E/E PLC-5/20 Processor is an industrial programmable controller designed to provide reliable logic processing and integrated Ethernet communication for PLC-5 automation systems. Produced by Rockwell Automation and part of the Allen-Bradley PLC-5 controller family, this processor combines traditional PLC-5 control capability with modern network connectivity.

The module features 16K Word SRAM memory for control program storage and system data handling. In addition, it includes embedded TCP/IP communication with EtherNet/IP support, allowing the controller to communicate directly with industrial networks, engineering workstations, and supervisory systems. This capability makes the processor suitable for upgrading existing PLC-5 installations to Ethernet-based automation environments while maintaining compatibility with legacy PLC infrastructure.

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Product Specifications

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Applications

• Industrial automation networks, enabling PLC-5 systems to communicate through Ethernet-based plant networks.

• Manufacturing production lines, controlling machinery, sensors, and actuators while sharing data with supervisory systems.

• SCADA integration, allowing controllers to exchange operational data with monitoring and visualization platforms.

• Process control environments, where stable communication and controller processing are required for continuous operations.

• Legacy PLC-5 system upgrades, adding Ethernet connectivity to older automation platforms.

• Industrial data collection systems, transmitting production information to management or analytics software.

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Advantages

• Integrated Ethernet communication, eliminating the need for additional external Ethernet modules.

• Support for TCP/IP and EtherNet/IP protocols, enabling seamless connection with modern industrial networks.

• 16K Word SRAM program memory, providing sufficient capacity for medium-scale control programs.

• PLC-5 modular architecture, allowing easy integration with existing PLC-5 racks and I/O modules.

• Reliable industrial performance, designed for continuous operation in factory automation systems.

• Simplified network integration, enabling PLC-5 controllers to communicate with HMIs, SCADA platforms, and engineering stations.

FAQ

1. What communication capability does the 1785-L20E/E processor include?
   It includes embedded TCP/IP communication that supports EtherNet/IP networking.

2. What type of memory is used in the processor?
   The module uses 16K Word SRAM to store ladder logic programs and controller data.

3. How does the processor connect to industrial networks?
   It connects directly through its built-in Ethernet communication capability using TCP/IP protocols.

4. What role does EtherNet/IP play in this processor?
   EtherNet/IP enables real-time industrial communication between controllers, I/O devices, and supervisory systems.

5. Can the processor communicate with SCADA systems?
   Yes, the embedded Ethernet interface allows data exchange with SCADA and monitoring software.

6. How does the processor manage automation tasks?
   It executes ladder logic programs, processes input signals, and updates outputs through the PLC-5 backplane.

7. Is the processor compatible with other PLC-5 modules?
   Yes, it works with standard PLC-5 I/O and communication modules installed in the same rack.

8. Can this module help modernize legacy PLC-5 systems?
   Yes, its Ethernet capability allows older PLC-5 systems to integrate into modern plant networks.

9. Does the processor support industrial network communication protocols?
   Yes, it supports TCP/IP communication through EtherNet/IP networking.

10. What types of automation environments typically use this processor?
    Manufacturing facilities, process plants, and industrial production systems that rely on PLC-based control.

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