• DIN-rail enclosure with screw terminals

• DC power input: regulated or unregulated

• Two serial ports, one isolated

• RS232, RS422 (4-wire), RS485 (3- and 5-wire)

• Combinations available to order

• Low-EMC RS422/485 drivers

• Internal pull-up and pull-down resistors

• User Program Download capability

The KD485 is a multi-purpose interface converter designed to satisfy a wide range of industrial data communications requirements.

The KD485-ADE inserts a CPU (with two serial ports) into the data path. Several standard application programs (“Modes”) are provided in a built-in ROM:

Mode 0: emulates KD485-STD (Interface converter/isolator); and also offers baud rate and character format conversion.

Mode 1: as above, plus Auto Driver Enable. The RS485 driver is automatically controlled according to the presence of data from the RS232 host.

Mode 2: RS485 to RS232 Addressable Adaptor. This makes possible the connection of up to approximately 50 RS232 devices to a 3/5 wire RS485 bus, through which they can be polled by a single Master.