COM1 port pins definition
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l Download function
The following terms should be done when using download function:
Step:
Make sure your PC has serial port or USB port ( use USB converter tool), connect it with COM1, then click
in the software to download data. The pins definition is shown as below:
PC serial port TH COM1 port
PC
Xinje download cable
TH
(1) Turn on switch 2 in DIP switch group to make the COM1 in download mode.
(2) Please use the cable provided by Xinje company
Meaning
1 NC Unused terminal
2 RXD RS232 receive
3 TXD RS232 send
4 A RS485 + signal
5 GND Signal ground
6 NC Unused terminal
7 B RS485 – signal
8 NC Unused terminal
9 NC Unused terminal
(1) Turn on switch2 when TH power supply is cut off
(2) Power on TH, connect TH with PC via Xinje download cable to download
project
(3) After the download process is over, cut off the power of TH, then turn off the
switch2
(4) Power on the TH again, the project will run normally
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