PRODUCTS > USB to RS-422/485 > DIN rail > USB-2COMi-SI-M

USB-2COMi-SI-M

Products Manual
  • USB-2COMi-SI-M
  • USB-2COMi-SI-M
  • USB-2COMi-SI-M
  • USB-2COMi-SI-M
USB-2COMi-SI-M - 2-Port RS-422/485 USB-to-Serial Adapter, with Optical-isolation and Surge Protection

Features

  • Adds two RS-422 or RS-485 serial port by connecting to a USB port

  • Two DB9 male connectors & two 6-pin terminal block connectors for optimal flexibility of serial connection

  • 2000V DC optical isolation

  • 25KV ESD surge protection

  • No need to open chassis to set operation modes-two external DIP switches for easy RS-422, RS-485 mode settings

  • Installed as standard Windows COM port

  • SECC metal chassis with DIN rail bracket

  • RS-422 data signals: TxD-, TxD+, RxD+, RxD-, GND, RTS-, RTS+, CTS+, CTS-

  • RS-485 4-wire data signals: TxD-, TxD+, RxD+, RxD-

  • RS-485 2-wire data signals: Data-, Data+

  • Automatic transmit and receive control for 2-wire RS-485 half-duplex mode

  • Built-in termination and biasing

  • High speed serial port with the baud rate up to 921.6K bps

  • Non-standard baudrates supported

  • LEDs of Power, TxD and RxD for easy port monitoring and diagnostics

  • Serial port protected with surge protection of 25KV

  • Powered by USB port, no external power adapter required

  • Easy plug and play installation and RS-422/RS-485 device connection

  • COM port number assigned can be changed to any COM port number required

  • Works with USB 1.1 & 2.0 host port

  • Supports Windows 8, Windows 7, Vista, 2003, XP, 2000 and Linux

  • Supports Mac OS X 10.9 and above, This driver is signed by Apple

    USB-2COMi-SI-M

USB Bus
Compliance USB 1.0/1.1 compliant, USB 2.0 compatible
Speed 12 Mbps, full-speed USB
FIFO 128 byte transmit FIFO
384 receive FIFO
   
Serial Interface
Port Type RS-422/RS-485
Number of Ports 2
Connectors two DB9 male and two terminal block
   
Serial Line Protection
ESD Protection 25KV
Optical Isolation 2000V DC
   
Serial Port Speed
Baudrate 300 bps to 921.6k bps
   
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
   
Serial Signals
RS-422 TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND, RTS-(A), RTS+(B), CTS+(B), CTS-(A)
RS-485-4 wire TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND
RS-485-2 wire Data-(A), Data+(B), GND
   
Driver Support
OS Windows 7, Vista, 2003, XP (WHQL certified) and 2000
Linux Kernel 2.4 and up built-in support
   
Power Supply
Input Bus-powered
No external power adapter required
   
Mechanical
Chassis SECC metal chassis with DIN rail bracket
   
Environmental
Operating Temperature 0 to 55 °C (32 to 131 °F)
Operating Humidity 5 to 95% RH
Storage Temperature -20 to 75 °C (-4 to 167 °F)
Safety Approvals CE, FCC

DB9 Male Connector Pin-outs

RS-422 DB9 Male
    RS-422 Signal Pin-outs of DB-9 Male
  Pin Signal  
  1 TxD- (A)  
  2 TxD+(B)  
  3 RxD+(B)  
  4 RxD- (A)  
  5 GND  
  6 RTS- (A)  
  7 RTS+(B)  
  8 CTS+(B)  
  9 CTS- (A)  
 
RS-485 DB9 Male
    RS-485 4-Wire (Full duplex) Signal Pin-outs of DB-9 Male
  Pin Signal  
  1 TxD- (A)  
  2 TxD+(B)  
  3 RxD+(B)  
  4 RxD- (A)  
  5 GND  
 
    RS-485 2-Wire (Half duplex) Signal Pin-outs of DB-9 Male
  Pin Signal  
  1 Data- (A)  
  2 Data+(B)  
  5 GND  
 
RS-422 Terminal Block
    RS-422 Signal Pin-outs of Terminal Block
  Pin Signal  
  1 TxD- (A)  
  2 TxD+(B)  
  3 RxD+(B)  
  4 RxD- (A)  
  5 GND  
 
RS-485 Terminal Block
    RS-485 4-Wire (Full duplex) Signal Pin-outs of Terminal Block
  Pin Signal  
  1 TxD- (A)  
  2 TxD+(B)  
  3 RxD+(B)  
  4 RxD- (A)  
  5 GND  
 
    RS-485 2-Wire (Half duplex) Signal Pin-outs of Terminal Block
  Pin Signal  
  1 Data- (A)  
  2 Data+(B)  
  5 GND  
 

RS-422 Signal Wiring

    Point-to-Point 4 Wire Full Duplex

USB-2COMi-SI-M                                    RS-422 Device

    RS-422 with Handshaking

USB-2COMi-SI-M                                   RS-422 Device

RS-485 Signal Wiring

    Point-to-Point 4-Wire Full Duplex

USB-2COMi-SI-M                               RS-485 Device

    Multidrop RS-485 2-Wire Half-duplex

USB-2COMi-SI-M                               RS-485 Device