USBG-COMi-M USB-to-RS232/422/485 Adapter User’s Manual
2
Input Power
USB Self Power (500mA, 5V)
Output Power
150mA, 5V power output for external devices requiring power
Hardware Installation
Outside the unit, there is one 4-pin DIP switch which is set to select the mode of
operation. You will need to set the switch settings to RS-232 mode, or RS-422, or
RS-485 mode as per the requirements of your application.
The Mode Block Configuration Settings are listed as follows:
SW (External DIP Switch) for Mode Setting
Operation Mode
S1 S2 S3 S4
RS-232
Standard RS-232 Mode
OFF
ON ON
ON
RS-422
4 wire with Handshaking
ON ON ON ON
RS-485
Full Duplex (4 wire)
ON
OFF
ON ON
Half Duplex (2 wire)
- with Echo
ON
OFF
OFF
ON
Half Duplex (2 wire)
- without Echo
ON
OFF
OFF
OFF