Chapter6 Remote Operation Mode; Rs232 Interface - ITech IT7300 Series User Manual

Chapter6 Remote Operation Mode

IT7320 series AC source has three standard communication interface: RS232, USB,
LAN.You can choose any one of them to communicate with PC.

6.1 RS232 interface

There is a DB9 connector at the rear of the power supply, when connect to computer,
you need to select a cable with COM port on both side;
To active communication,you need to enable the settings in menu to be the same with the
PC communication configuration.
Note：The RS232 settings must match the settings in front panel system information. If any
change, please press
RS-232 data format
RS-232 data is a 10-bit word with one start bit and one stop bit.The number of start bit is
not programmable.Stop bit is selectable between 1&2.Besides,you can set the parity bit in
the menu using the front panel
Parity options are stored in a non-volatile memory.
Baud Rate
The front panel
the non-volatile memory: 4800,9600,19200 38400,57600,115200
RS-232 connection cable
Adopt the RS232 cable with DB-9 interface because the serial port of RS232 can be
connected with that of the controller (e.g. PC). The modulating cable of the air-conditioner is
not recommended. The pins of plug are shown as the following table.
If your computer is provided with a RS232 interface with DB-25 plug, a cable and a adapter
with DB-25 plug (one end) and DB-9 plug (the other end) are required (not the modulating
cable of the air-conditioner)
RS-232 plug pins
(Shift)+
(Shift)+
(Shift)+ button allows the user to set baud rate which is stored in
Pin number Description
1
2
3
4
5
6
7
8
9
(Menu)key to modify the menu: SYST SET\COMM.
key.
No connection
TXD, transfer date
RXD, receive data
No connection
GND, ground
No connection
CTS, clear transfer
RTS, ready to transfer
No connection
43
IT7300 User Manual
User Manual