The ADA-4028LA addressable baud rate converter is device solving the problem of connecting no addressable devices equipped with the Current Loop CLO interface to multipoint RS485/422 bus by adding the address to the no-addressable device. At the same time the converter converts RS485/422 standard to Current Loop CLO standard with possibility of changing the baud rate and format of the transmitted data. Depending on the configuration can be set the baud rate, number of data bites, parity (None, Odd, Even) and number of stop bits. The setting can be different for Current Loop CLO port and RS485/422 port.
The ADA-4028LA supports the asynchronous baud rate up to 230,4 kbps via one or two pairs of twisted-pair cables of RS485/422 interface, and up to 19,2 kbps on 2-wire Current Loop CLO bus.
The ADA-4028LA converter with active transmitter allows connection to the RS485/422 bus devices with passive Current Loop CLO interface eg. energy meters like POZYTON LZQM, ELSTER A1500, PAFAL and others, with possibility of conversion the format and baud rate between connected devices to Current Loop CLO interface and RS485/422 bus.
The ADA-4028LA is equipped with screw terminal block for connection of RS485/422, Current Loop CLO and power supply. Over-voltage protection on each RS485/422 lines and Current Loop, was made on the base over-voltage LED`s and the fuses. To RS485/422 bus created by the use ADA-4028LA, is possible to connect 32 devices, operating in half duplex mode (query /response) on 2 or 4 wires multipoint bus or full duplex on 4-wire bus. To Current Loop CLO bus created by the use ADA-4028LA (active), is possible to connect 4 devices operating in half duplex mode.
The converter has an internal low-energy surge protection for each line of Current Loop CLO interface. However, for the lightning protection should be used external lightning arresters such as the typical phone line protection.