Appendix a: connections, A.1. serial port pin outs – SENA Parani-SD1100 User Manual
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Appendix A: Connections
A.1. Serial Port Pin Outs
Parani-SD is compatible with the RS422/485 standard, a DB9 Male interface.
Figure A-1 Pin layout of the DB-9 male connector
Table A-1. Pin assignment of the DB-9 male connector
Pin #
Signal
Direction
Description
1
VCC
Input
Power Supply 5V~12V
2
-
-
-
3
RXD-
TRXD-
Input
In/Output
RS422 Received Data Negative
RS485 TX/RX Data Negative
4
TXD+
Output
RS422 Transmit Data Positive
5
GND
-
Signal Ground
6
VCC
Input
Power Supply 5V~12V
7
RXD+
TRXD+
Input
In/Output
RS422 Received Data Positive
RS485 TX/RX Data Positive
8
TXD-
Output
RS422 Transmit Data Negative
9
GND
-
Signal Ground
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