Description

Brief Product Description

The Allen-Bradley 1785-LT/B is a high-performance PLC-5 series processor module designed to manage local and remote I/O configurations while facilitating high-speed data exchange via Data Highway Plus (DH+). It provides a scalable 6K-word memory architecture and supports up to 512 I/O points, making it a reliable choice for legacy industrial automation and process control.

Product Description

Integrated Control and Communication Architecture

The Allen-Bradley 1785-LT/B functions as a centralized intelligence unit for industrial automation networks. This processor module efficiently manages up to four local racks and extends its reach to three remote I/O racks, supporting a total of twelve devices. By utilizing its dedicated Scanner port, the 1785-LT/B establishes high-speed connections for local and remote data acquisition. Additionally, the integrated Data Highway Plus (DH+) port allows the processor to communicate seamlessly with HMI panels, SCADA systems, and co-processors, ensuring robust interoperability within diverse multi-vendor environments.

Scalable Memory and I/O Capacity

To accommodate growing operational demands, the 1785-LT Series B features a flexible memory structure. The unit includes 6K words of onboard memory, which users can expand to 14K words through optional hardware modules. For instance, the 1785-MR 4K RAM and the 1785-MJ 8K EEPROM modules provide additional space for complex instruction sets and data logging. The processor governs up to 512 I/O points and demonstrates complete compatibility with both 16 and 32-channel I/O modules, allowing engineers to tailor the hardware to specific input/output densities.

Robust Performance in Extreme Environments

Rockwell Automation engineered the 1785-LT/B module to maintain consistent performance within harsh manufacturing climates. The hardware operates reliably between 0°C and 60°C (32-140°F) and incorporates high shock resistance to withstand mechanical vibrations. Furthermore, the module adheres to stringent Electromagnetic Compatibility (EMC) standards and includes built-in electrostatic discharge (ESD) protection. These features proactively safeguard internal circuitry against electrical interference, ensuring the processor remains stable during mission-critical automation tasks in demanding plant settings.

Technical Specifications