User`s manual

http://www.adtechcn.com 19
4.9 SI 1 (serial interface 1)
母头
RX1
VDD50
JCP6
5
9
4
8
3
7
2
6
1
TX1
Female jack DB9
Line No. Name Definition
1 NC Not connected
2 TX1 Transmit data
3 RX1 Receive data
4 GND Power’s grounding
5 GND Power’s grounding
6 NC Not connected
7 VDD5.0 Provide 5V power to external devices
8 VDD5.0 Provide 5V power to external devices
9 NC Not connected
SI 1 not used
) Connecting to power supply
The mainboard of this device employs +24 VDC as its power source, which should be supplied from the external
switching power. The wiring for the power supply is shown in the figure below: