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ADA-I91402 converts USB to RS-485/RS-422 standard without interference of data format and it is automatically detected by the computer system after connecting to USB socked (Plug and Play device).
The converter transmits RX,TX signals and two additional RTS, CTS or DTR, DSR set by SW2 microswitch.
For communication with other devices ADA-I91402 uses data transmission line like:

• RX+,RX-,TX+/DATA+,TX-/DATA- (RS-485/422),
• CTS+/DSR+,CTS-/DSR-,RTS+/DTR+,RTS-/DTR- (RS-422)

There is also the possibilities of looping the DTR with DSR signal or RTS with CTS signals.
This converter doesn`t require external power supply (it is powered from USB bus) and it uses asynchronous baud rate up to 921,3 kbps (drivers for STANDARD baud rate) / 1500000 bps (drivers for PROFIBUS baud rate). USB cable with A-type plugs enables simple connection to a computer and on other side simple connection the RS485/422 bus provide plug-in screw terminal block. The converter has implemented overvoltage protection RS485/RS422 interface, 2,7kV= optoisolation in signal channel between USB and RS-485/422 interface and 1kV= or 3kV= galvanic isolation (dependent on version).
Together with ADA-I91402 we provide the drivers, which after installation, create in operating system (98, ME, NT, 2000, XP, 2003, Vista, 7, 2008, 8, 8.1, 10) additional COM port on the next free number e.g. COM3. Can be use as standard COM port, it isn`t hardware port but virtual, created in Windows system and some applications running in DOS (use this port), can operate improperly.
Support ended for Windows 98, ME, NT systems.