Installing and putting a SINAUT modem into operation
5.8 ISDN dial-up modem MD4
Station control system
System Manual, 07/2009, C79000-G8976-C178-07
261
Illustration
Pin no.
Signal name
Signal direction
Remark
4
DTR
Input
5
GND
6
DSR
Output
7
RTS
Input
8
CTS
Output
1
5
6
9
9
RI / T
Output
The X2 RS-485 connector is designed as a 9-pin D-sub miniature female connector. The
pinout is shown in the following table.
The RS-485 interface can be activated and the terminating resistor activated using a 4-pin
DIL switch accessible from below through the housing grill.
Table 5- 43 Pinout of the X2 RS-485 connector
Illustration
Pin no.
Signal name
Signal direction
Remark
1
2
3
Data B
Bidirectional
4
5
M5
-
0 V for bus termination in
connector
*)
6
P5
-
5 V for bus termination in
connector
*)
7
8
Data A
Bidirectional
5 4
3
2
1
98
7
6
9
*) It is advisable to activate the terminating resistor for the RS-485 bus in the connector and not in the modem itself.
Standard connecting cable for the RS-232 and RS-485 port
The TIM module or other terminal device with a suitable interface is connected to the X1 9-
pin RS-232 connector.
The following standard connecting cable is available to attach to the X1 connector.
