MD-42 RS-422/485 CONVERTER
230 AC Asynchronous,full/half duplex
The compatibility of MD-42 and MD-45 The older units
called MD-42 are replaced by MD-45. If they are
compatible depends on the way to control the data flow
MD-42 controlled by RTS (Request To Send) signal or
in RS-422 transmission the transmitter can be set always
active. In MD-45 can the data direction be controlled by
data flow or RTS.