User`s manual

6
5. External Wiring
5.1 Connecting to the RS-232 line
This section explans the standard method for connecting the RS-232 line.
Receive carrier
Reception data
Transmission
Data terminal ready
Signal ground
Data set ready
Transmission request
Transmission possible
CD
RD(RXD)
SD(TXD)
DTR(ER)
SG
DSR(DR)
RS(RTS)
CS(CTS)
RI(CI)
Pin
number
Signal
abbreviation
Signal direction
External
device
1
2
3
4
5
6
7
8
9
Called status display
C24
( 1)
9
1
2
3
4
5
6
7
8
Signal name
1: QJ71C24N, QJ71C24 : CH1 side,
QJ71C24N-R2 QJ71C24-R2 : CH1/CH2 side
The module uses the following type of RS-232 interface connector.
9-pin D-sub (female) screw fixing type
Use either of the following as a connector shell for the connection cable of the
module.
•
3M
Plug model: 8209-6009 Shell model: 3702-2209 M2.6
•
Tyco Electronics AMP K.K.
Plug model: 747904-2 Shell model: 747515 or 174469-2
POINT
To connect the module with a modem/TA when using modem function, install wiring as
specified for the modem/TA.