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Technical Specifications

Supported Serial Settings​

Serial SettingValue
Baud Rate300 to 921,600
Data Bits7 or 8
ParityNone, Odd, Even, Mark & Space
Stop Bits1 or 2
HandshakingRTS/CTS DTR/DSR Xon/Xoff
BreakSupported

Device Pinout​

RS-232 Devices (US-101, US-257, US-701, US-279)​

RS-232 9 Pin D Connector Pinout

RS-422/485 Devices (US-324, US-313, US-346, US-842)​

RS-422/485 9 Pin D Connector Pinout

Important
  • DTR/DSR Handshaking is not available on RS-422/485 devices
  • For RS-422 FULL Duplex Communications, please note the pin outs above.
  • To achieve RS-485 Half Duplex Communications, using two wires for communication, Pins 1 and 6 must be shorted together, and pins 2 and 7 must be physically shorted together.
  • Once your wiring is setup, you will also need to set the card to FULL or HALF Duplex mode in the software.

USB Connector Pinouts​

USB Type A Connector (US-101 and US-324)​

USB Type A Connector Pinout

USB Type B Connector (US-257/313/701/279/346/842)​

USB Type B Connector Pinout

Storage and Operating Environment Guidelines​

Storage​

ParameterValue
Temperature-10°C to +70°C
Humidity8% to 95% non-condensing

Operational​

ParameterValue
Temperature0°C to +70°C
Humidity20% to 75% non-condensing

RS-422/485 Bias/Terminating Resistors​

Applicable to US-324/313/346/842 only

RS-422/485 Bias Terminating Resistor Diagram