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2.3. RS-232C Port Wiring
By connecting to the RS-232C (male) of this product and the RS-232C port of a PC with a D-sub 9 pin female-to-
female type cable with straight wire connection, this product can be controlled via RS-232C transmission.
*The RS-232C cable is not included. Please purchase it separately.
Connect the cables with the connection pin numbers listed below. The pin numbers that are not shown will not
affect the operation of this product.
PHC-D08
1
5
6
9
D-sub 9 pin female
inch thread
Signal
Pin No.
TXD
2
RXD
3
GND
5
CTS
7
RTS
8
• Use a straight RS-232C cable when connecting to the connection devices (PC). This
product may malfunction and cause failure to the Main Unit and other connected devices if
they are used together with other devices.
• Do not bundle the RS-232C cable with power supply cords when being used. Failure to
Caution
comply may result in malfunction from power line noise.
• Do not connect the RS-232C and USB cables simultaneously. Failure to comply may
result in malfunction.
• Do not pull out or insert the RS-232C cable while the power supply is turned on.
Signal
Pin No.
RXD
2
TXD
3
GND
5
RTS
7
CTS
8
Control Device
(PC)
1
5
6
9
D-sub 9 pin female
inch thread
Pin No.
Signal
Pin No. Signal
2
RXD
2
RXD
3
TXD
5
GND
3
TXD
7
RTS
8
CTS
5
GND
7
RTS
8
CTS
2
11
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