ITech IT6500 Series Programming Manual page 6

RS-232 Troubleshooting：
If you meet some problems when communicating with PC by RS232 interface, please check
the following items:
Please check the parameters setting
PC and power supply must have the same configuration in the following items: baudrate,
parity bit,data bit and flow control.Please note that power supply has been configured with a
start bit and stop bit(the two values are fixed).
Check the cable
Ensure you have used the correct communication cable.Please pay attention that some
cable may not have a correct internal wiring even it is with a appropriate DB9 interface.
The RS232 communication cable should have been connected to a correct serial port of
the PC(COM1,COM2,ext).
Communication Setup
Please ensure the PC and power supply have the same configuration in the following
items.
baudrate： 9600(4800、 9600、 19200、 38400、 57600、 115200).You could enter the system
menu to set the baudrate.
Data bit：8
Stop bit：1
Parity bit： (none,even,odd)
EVEN 8 data bits have even parity
RS-232 pins description
Pin description
1 connectionless
2 TXD,transmit data
3 RXD,receive data
4 connectionless
5 GND
6 connectionless
7 connectionless
8 connectionless
9 connectionless