• 
• 
• 

1. Start
2. Company
   • About Us
   • Contact
   • Privacy Policy
   • Cookie Policy
3. How to buy
   • Sales Conditions
   • Payment Conditions
   • Delivery Conditions
   • Distributors
4. Info
   • Warranty
   • Tests
   • Where work our devices
5. Contact

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).
Drivers for ADA-I91402, after installation, create an additional COM port in the operating system.This port with the next available number, e.g. COM3, can be used as a standard COM port. However, this is not a real port existing in the computer, but a virtual one, the advantage of which is a much higher data transfer speed than in the standard COM port.
For ADA-I91402 converter, are available serial virtual ports drivers foroperation systems:

• Windows: 98, ME, NT, 2000, XP, Vista, 7, 2008, 8, 8.1, 10, 11; Windows CE,
• Windows Serwer: 2003, 2008 R2, 2012 R2, 2016,
• Linux: from Ubuntu 11.10, kernel 3.0.0-19 drivers implemented in kernel system,
• Raspbian - Raspberry Pi,
• Mac: OS X 10.3 to 10.8, OS X 10.9 and newer ones.

Converter supports protocols: SunSpec MODBUS, MODBUS-RTU, MODBUS-ASCII, DNP, PROFIBUS-DP and other (technical information).