1785-KE 1785KE AB AB Communication Interface Module

1785-KE 1785KE AB AB Communication Interface Module

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Product Details

The 1785-KE PLC 5 Data Highway Plus Communication Interface Module by Allen Bradley is a communication module that interfaces any RS-232-C intelligent device with the Data Highway Plus (DH+) network. The I/O rack, single slot module offers a full Duplex or Half Duplex protocol on the Asynchronous link. It connects to RS-232-C devices through the Asynchronous (RS-232-C) 15-pin female EIA D-shell connector port on the module using the Data Terminal Interface Cable (1770-CG) or the modem interface cable (1770-C); it also connects to the Data Highway Plus (DH+) via the 3-screw terminal block using the Data Highway Plus drop-line cable (Belden 9463). In addition, it can communicate with the 1784-T50 Terminal through the 9-pin male EIA D-shell connector port, and has a transfer rate of 57,600 bits per second on the DH+ and Switch selectable rate ranging from 110 to 19200 bits/second on the RS-232-C port.

The 1785-KE has 4 switch assemblies (SW1, SW2, SW3, and SW4) which provide communication options. The SW1 switch provides RS-232-C link options, the SW2 sets Node number, the SW3 selects Data Highway Plus and RS-232-C link communication rates, and the SW4 is a reserved switch. This unit is mounted on a single slot of the 1771 I/O rack, and when using a Drop-line configuration, is mounted within 100 feet of the Data Highway Plus Trunk line. When connecting directly to the RS-232-C device, the maximum installation distance is 50 feet. Keying is between pins 6 and 8 and between 12 and 14 of the rack pins, and the module draws 1.2 A backplane current from the I/O Rack. It has a 0 to 60 degree Celsius functional temperature range with a 5% to 95% non-condensing humidity range.

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