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Serial interface specificat ions – B&B Electronics VESR9xx - Fiber Models - Manual User Manual

Page 51

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Appendix C

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45



SERIAL INTERFACE SPECIFICAT IONS


Serial Interfaces

Mode Selection

RS-232/422/485 software selectable

RS-232 lines

TXD, RXD, RTS, CTS, DTR, DSR, DCD,
GND

RS-422 lines

TXDA(-), TXDB(+), RXDA(-), RXDB(+),
GND

RS-485 lines (2 wire)

Data(-), Data(+), GND

RS-485 lines (4 wire)

TXDA(-), TXDB(+), RXDA(-), RXDB(+),

GND

Baud Rates

75, 150, 300, 600, 1200, 2400, 4800, 7200,
9600, 14400, 19200, 28800, 38400, 57600,

115200, 230400

Data Bits

5, 6, 7, 8

Parity

None, even, odd, mark, space

Stop bits

1, 1.5, 2

Flow control

None, RTS/CTS, XON/XOFF

RS-422/485 biasing

Auto 4.7K ohm pullups and pulldowns

RS-422/485

termination

Auto termination with thru hole resistor
(user supplied)

RS-485 data control

Auto control via MCU