B&B Electronics MESR900 Series - Fiber Models - Manual - Manual (Page 73)

9. Appendices VlinxMESR9xx Modbus Gateway
Page 69 Manual Documentation Number MESR9xx-2113m
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Serial Interface Specifications
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