NI WSN-3230/3231 User Guide and Specifications
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RS-232
Baud rate ................................................................300, 600, 1200, 1800, 2400, 4800, 7200, 9600,
14400, 19200, 28800, 38400, 56000, 57600, 115200,
128000, 153600, 230400 bps
Data bits .................................................................7 or 8
Stop bits .................................................................1 or 2
Parity ......................................................................Odd, even, or none
Flow control ...........................................................Hardware (RTS/CTS), software (XON/XOFF), none
Maximum cable length ..........................................2500 pF equivalent
Note
Cable capacitance greater than 1000 pF may adversely affect the maximum baud rate.
Maximum RS-232
continuous voltage, (RX, CTS)..............................±15 V
Data line ESD protection (human body model).....±8 kV
Overvoltage protection...........................................±30 VDC
RS-485
Maximum cable length ..........................................1.2 km (4,000 ft)
Baud rate (standard baud rates only) .....................300, 600, 1200, 1800, 2400, 4800, 7200, 9600,
14400, 19200, 28800, 38400, 56000, 57600, 115200,
128000, 153600, 230400 bps
Supported modes....................................................4 wire, 2 wire auto
Data bits .................................................................7 or 8
Stop bits .................................................................1 or 2
Parity ......................................................................Odd, even, or none
Flow control ...........................................................Software (XON/XOFF), none
Maximum RS-485
common-mode voltage........................................... –7 V to +12 V
Data line ESD protection (human body model).....±8 kV
Overvoltage protection...........................................±30 VDC
Sensor Power
Voltage ...................................................................12 V ±10%
Current ...................................................................50 mA maximum
Protection
Short circuit proof ..........................................Indefinitely
Overvoltage protection...................................±30 V
