Overview

The Allen-Bradley 1785-KA is a communication module from the 1785 series, primarily used for connecting Allen-Bradley PLC systems to other devices, such as computers or networks. It is typically found in legacy PLC systems like the PLC-5 series and is used to interface with a variety of communication networks.

Specifications

• Type: Communication Adapter Module

• Compatibility: Designed for use with PLC-5 family processors.

• Communication Protocols:

  • DH+ (Data Highway Plus): Allows communication over a local area network (LAN) to other PLCs or compatible devices.
  • Typically used for integrating older PLC systems into a network of PLCs or other automation devices.

• Power Requirements:

  • Voltage: 5V DC, supplied from the PLC's backplane.
  • Current Consumption: Typically consumes around 300-400mA from the backplane.

• Mounting: This module is designed to fit into the backplane of a PLC-5 system rack. It can be installed in any of the available slots within the rack.

• Data Rate:

  • Supports 57.6 kbps for DH+ networks.

• Dimensions:

  • Height: 4.75 inches (120 mm)
  • Width: 6.25 inches (159 mm)
  • Depth: 1.25 inches (32 mm)

• Indicators:

  • LED indicators show the status of communication, including transmit and receive activity, and the operational status of the module.

• Environmental Conditions:

  • Operating Temperature Range: 0°C to 60°C (32°F to 140°F)
  • Storage Temperature Range: -40°C to 85°C (-40°F to 185°F)
  • Relative Humidity: 5% to 95%, non-condensing

• Certifications:

  • CE, UL certified