Rs485 4 Wire To 2 Wire Converter

For use with unicom 2500 converters and shark meters features this cable assembly was created to allow users to easily connect unicom 2500 rs485 to rs232 or fiber optic converters.

Rs485 4 wire to 2 wire converter.

Rs 485 is set up for four wire communication by default. Multidrop rs 485 networks require additional software development. Check the data sheet schematic or block diagram. Ni serial directly supports 4 wire full duplex operation on peer to peer rs 485 networks.

The usb to rs485 four wire converter allows you to connect a non usb rs485 2 wire db9 device to your usb bus. 6 foot length pre wired with connectors installed. This device is pre engineered to allow interoperability of 2 wire and 4 wire rs 485 devices in a variety of configurations. Summary the rs 485 standard defines a multi point data communications interface using a balanced pair.

The serialcomm con 485 422 ee4 is a very high quality and very reliable industrial grade bi directional externally powered 2 5k isolated rs 232 to 4 wire rs 485 or rs 422 converter which converts full duplex rs 232 to a full duplex four wire rs 485 or full duplex four wire rs 422. The cnv 100 rs 485 eia 485 interfaces conform to the modbus standard for rs 485 serial data communications. Our device servers support 4 wire rs485 but often other devices runs on simplified 2 wire configuration. Sciences offers the cnv 100 rs 485 2 wire to 4 wire converter.

On the rs 485 connector place jumper wires between txd and rxd and between txd and rxd. To prevent reflections for both 2 and 4 wire transmission you must properly terminate the transmission lines. Follow the instructions below. The usb hubs are ideal for connecting factory automation devices such as data loggers and industrial machinery.

The cable easily wires and converts a 2 wire rs485 shark meter s input and the 4 wire unicom 2500 inputs. For cabling solutions refer to ni serial cable product page. To connect a 2 wire device you will need to short the transmit and receive signals together on the rs 485 port. Leds flash to confirm data transmit receive at both 2 wire and 4 wire sides.

Figure 3 applies to most b b rs 485 converters or serial cards that can be set for 2 wire or 4 wire operation and for some 2 wire converters that use the same circuit board for the rs 422 model. It is quite simple to make the connection between the two wiring just connect the positive lines together and do the same for negative lines.