Allen Bradley 1785-KA Interface Module

Allen Bradley 1785-KA Interface Module

Introducing Data Highway Plus

The Allen- Bradley Data Highway Plus is an economical

baseband local area network (LAN) that provides: .

Remote programming capabilities

Industrial- hardened interfaces

Easy reconfiguration to meet changing manufacturing needs

Data Highway Plus features

Remote programming of any PLC-2, PLC-3, or PLC-5 on your network with Allen-Bradley 6200 Series Software direct connection to PLC-5s and Industrial Programming Terminals transparent connectivity with Data Highway, Data Highway II, and broadband networks token-passing protocol that provides efficient and reliable data transport

You can use Data Highway Plus alone in smaller applications (generally less than 20 nodes) or with other industrial networks as part of a plant-wide Computer Integrated Manufacturing (CIM) facility. You can also use Data

Highway Plus with a variety of networks, devices, and software packages.

Use the table below to find the information you are interested in.

Cabling provides the medium for transporting data between nodes.

Your Data Highway Plus cabling system consists of the following parts

A trunkline

Droplines

Station connectors and terminators

Important

Do not put Data Highway or Data Highway II nodes directly on a Data Highway Plus trunkline.

Trunkline and Droplines

The Data Highway Plus trunkline is the main channel of communication on the network.

The trunkline is twinaxial cable with a maximum length of 10,000 feet.

Droplines connect each node to the trunkline and are made of the same cable as the trunkline.

A dropline can be up to 100 feet long.

Allen-Bradley offers a 15-pin female connector kit (catalog no. 1771-XE) that you can use to connect the dropline to the node.

When planning and installing your cable system: use only the cable specified in the Ordering Information section of this document isolate the cable from high amounts of electrical noise or high voltage avoid tension by providing some slack in the cable

For more information on Data Highway Plus cabling, refer to the Data Highway Cable Assembly and Installation Manual (publication 1770-6.2.1).

Station Connectors and Terminators

A station connector (catalog no. 1770-SC) connects the dropline from a hardware interface to the trunkline.

Station connectors include a 150-ohm terminating resistor to maintain the proper impedance on the network.

The 1785-KA Communication Adapter Module

You can connect one or more Data Highway Plus networks to an existing Data Highway network using an Allen-Bradley 1785-KA interface

You can also use the 1785-KA to interconnect several Data Highway Plus subnetworks via a Data Highway trunkline.

You mount the 1785-KA in a Bulletin 1771 I/O chassis.

Our Recommend