Overview

The 1785-KE module is a communication interface that connects an intelligent RS-232-C (asynchronous) device to an Allen-Bradley Data Highway Plus network. It offers flexibility in communication protocols, allowing users to select between full duplex (unpolled) or half duplex (polled) modes for its asynchronous link.

Specifications

• Communication Rates

  • Data Highway Plus: 57,600 bits per second
  • RS-232-C Port: Switch selectable from 110 to 19,200 bits per second

• Functions

  • Interfaces a programmable RS-232-C compatible device with an Allen-Bradley Data Highway Plus network

• Location

  • 1771 I/O Rack

• Communicating Ports

  • Data Highway Plus: 3-screw terminal block
  • 1784-T50 Terminal: 9-pin male EIA D-shell connector
  • Asynchronous (RS-232-C): 15-pin female EIA D-shell connector

• Cabling

  • Asynchronous RS-232-C:
    • Data Terminal Interface Cable (cat. no. 1770-CG or equivalent)
    • Modem Interface Cable (cat. no. 1770-CP or equivalent)
  • Data Highway Plus:
    • User-supplied Data Highway Plus dropline cable (Belden 9463)

• Power Requirements

  • 1.2A @ 5VDC

• Ambient Temperature Rating

  • Operational: 32°F to 140°F (0°C to 60°C)
  • Storage: -40°F to 185°F (-40°C to 85°C)

• Ambient Humidity Rating

  • 5% to 95% non-condensing