7
5.2 Connecting to the RS-232
Use the RS-232 cable when connecting to the RS-232 interface.
(1) RS-232 connector specifications
Pin
No.
Signal
abbreviation
Signal name
Signal direction
Web server module
Modem
1
CD(DCD)
Data Carrier Detect
2 RD(RXD)
Received
Data
3 SD(TXD)
Transmitted
Data
4 ER(DTR)
Data
Terminal
Ready
5 SG(GND)
Signal
Ground
6
DR(DSR)
Data Set Ready
7
RS(RTS)
Request To Send
8
CS(CTS)
Clear To Send
1
2
3
4
5
6
7
8
9
9 CI(RI)
Ring
Indicator
(2) RS-232 interface connector
The Web server module uses the following RS-232 interface connector.
y
DDK Ltd.
9 pin D-sub (Female) screw type
17L-10090-27 (D9AC) (-FA)
Use the following model as a connector shell of the Web server module side
connection cable.
y
DDK Ltd.
Plug, shell: 17JE-23090-02 (D8A) (-CG)
y
Connector fitting screw (M2.6)
(3) RS-232 cable
Use the RS-232-compliant cable of up to 15m.
[Recommended cable]
y
Oki Electric Cable Co., Ltd.
7/0.127
P HRV-SV ...
: Specify the number of pairs. (For 13 pairs,
specify 7/0.127 13P HRV-SV.)
