ITech IT6800B Series Programming Manual page 19

with the controller (eg PC). Do not use blank Modem cable. Table 2-2
shows the plug pins.
If your computer is using a RS-232 interface with DB-25 connector, you
need an adapter cable with a DB-25 connector at one end and the other
side is a DB-9(not blank modem cable)
Pin introduction of RS-232
connector
RS-232 Troubleshooting:
If there is RS-232 connection problem, check the following:
1. Computer and power supply must configure the same baud rate,
2. As described before in RS-232 connector, you must use the correct
3. Interface cable must be connected to the correct serial port on the
Communication Settings
Before communication, you should first make the following parameters
on the power supply and PC matches.
Baud Rate: 9600 (4800,9600,19200,38400,57600,115200). You can
enter the system menu from the front panel, and then set the baud rate.
 Data bits: 8
 Stop Bits: 1
 calibration (none, even, odd)
 EVEN
 ODD
 NONE



parity, data bits and flow control options. Note that the power
configuration as a start bit and a stop bit (these values are fixed).
interface cable or adapter. Note that even if the cable has the right
plug, the internal wiring may be wrong.
computer (COM1, COM2, etc.).
8 data bits, have even parity
8 data bits have odd parity
8 data bits, no parity
MODE: （SIG,MUX）
SIG a single instrument is connected to the communication
MUX multiple sets of instrument communication with PC at the same time,
in this situation, instrument address must be set to distinguish among all
the units(address 0 ～30, default set is 0）
Copyright © Itech Electronic Co., Ltd.
Pin Description
number
1 No connection
2 TXD, transfer date
3 RXD, receive data
4 No connection
5 GND, ground
6 No connection
7 CTS, clear transfer
8 RTS, ready to transfer
9 No connection
Remote Control
10