2-Port RS232/422/485 Combo Serial to USB2.0 Adapter
Features:
9
Provides 2 RS232/422/485 Serial Ports over USB Port
9
Provides 2 DSUB-9 Connectors
9
Supports USB2.0 High Speed (480Mbps) Data Rate
9
Supports USB Screw Lock Mechanism Enhances Reliability
9
Baud Rate from 300 bps to 921.6Kbps
9
Supports 7,8 Data Bits
9
Odd, Even, Mark, Space, or None parity mode
9
Supports 1, or 2 Stop Bits
9
Supports USB Bus Power
9
Optional Model Supports 2,500Vrms Isolation and 15KV ESD
Protection
9
Supports Win98, Me, XP, CE, 2K, 2K3, Vista and Windows 7
There are two 4-pin DIP switches on the back side of the box for Port 1
and Ports 2. Each of them has 4 switch pins on it. Pin 1 to 2 (marked as
M1 and M0) were used to set the RS232, RS422 or RS485 modes. The Pin
3 and 4 (marked as TERM ON) are used to Enable(ON) or Disable(OFF)
the termination resistors for RS422/485 modes.
Port 1, 2 DIP Switches:
Mode Settings:
Switch Settings
Description
RS485 2-wire mode
(Default)
ON
1 2 3 4
M1
M0
TERM ON
TERM ON
ON
1 2 3 4
M1
M0
TERM ON
TERM ON
RS422/485
mode
selector
Termination
resistors’
enabler
3. Mode Switch Settings
2
