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Appendix A: Connections
A.1 Ethernet Pin outs
The HelloDevice Pro Series uses standard Ethernet connector, which is a shielded connector
compliant with AT&T258 specifications. Table A-1 shows the pin assignment and the wire color.
Figure A-1 Pin layout of the RJ45 connector
Table A-1. Pin assignment of the RJ45 connector
Pin
Description
Color
1
Tx+
White with orange
2 Tx-
Orange
3
Rx+
White with green
4 NC
Blue
5
NC
White with blue
6 Rx-
Green
7
NC
White with brown
8 NC
Brown
A.2 Serial Ports Pin Outs
The pin assignment of the HelloDevice Pro Series DB9 connector is summarized in Table A-2. Each
pin has a function according to the serial communication type configuration.
6 7 8 9
1 2 3 4 5
Figure A-2 Pin layout of the DB-9 connector
Table A-2. Pin assignment of the DB-9 connector
Pin
RS232
RS422
RS485
1 -
Tx- Data-
2 Rx
-
-
3 Tx
Rx-
-
4 DTR
Rx+
-
5 GND
-
-
6 DSR
-
-
7 RTS
-
-
8 CTS
-
-
9 -
Tx+ Data+