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NB3711 User Manual 4.0
Isolated 3-wire RS-232 Port Specification (Option Sb)
The isolated 3-wire RS-232 port has the following specification:
Feature
Specification
Protocol
3-wire RS-232: GND, TXD, RXD
Baud rate
600, 1 200, 2 400, 4 800, 9 600, 19 200,
38 400, 57 600, 115 200, 230 400, 460 800,
921 600
Data bits
7 bit, 8 bit
Parity
none, odd, even
Stop bits
1, 2
Software flow control
None, XON/XOFF
Hardware flow control
None
Galvanic isolation
1500 V
DC
Table 3.25.: Isolated RS-232 Port Specification
EP Pins
Signal
1 / 5
GND
2 / 6
TxD
3 / 7
RxD
4 / 8
−
Table 3.26.: Pin Assignments of RS-232 Port Signals (EP1 / EP2)
RS-485 Port Specification (Option Sa)
The RS-485 port has the following specification:
Feature
Specification
Protocol
3-wire RS-485 (GND, A, B)
Baud rate
600, 1 200, 2 400, 4 800, 9 600, 19 200,
38 400, 57 600, 115 200, 230 400, 460 800
Data bits
7 bit, 8 bit
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