Bosch DX4010I User Manual

Page of 12
DX4010i | Installation Instructions | 7.0 
DB9 DTE RS-232 Connector (P6) 
 
 
10 
Bosch Security Systems, Inc. | 1/05 | 4998141106C 
 
7.0 DB9 
DTE 
RS-232 
Connector (P6) 
The DX4010i serial port is wired as a DTE device. 
 
If the connected device is a data carrier 
equipment (DCE) device (most common, such 
as an external modem), a straight through 9-pin 
to 9-pin, or (DTE to DCE) 9-pin to 25-pin cable 
may be used. 
 
If the connected device is a DTE device (such as 
a PC serial port), a null-modem (DTE to DTE) 
9-pin to 9-pin, or null-modem 9-pin to 25-pin 
cable is required. 
Consult the operating manual provided with your 
compatible device for wiring requirements. 
If you are using an alternate configuration, you must 
make a custom cable (refer to Figure 8 and Table 5)
 
Figure 8:  DB9 Connector Layout 
1
2
3
4
5
6
7
8
9
 
1-
 
DCD 
2-
 
RxD 
3-
 
TxD 
4-
 
DTR 
5-
 
GND 
6-
 
DSR 
7-
 
RTS 
8-
 
CTS 
9-
 
RI 
 
Table 5:  Alternate Wiring Configuration 
 
 
 
 
 
DX4010i 
9-Pin DTE 
Connector 
DCE  
(9-pin) 
DTE  
(9-pin) 
DCE 
(25-pin) 
DTE 
 (25-pin) 
1: DCD  
(not used) 
1: DCD 
1: DCD 
8: DCD 
8: DCD 
2: RxD 
2: RxD 
3: TxD 
3: RxD 
2: TxD 
3: TxD 
3: TxD 
2: RxD 
2: TxD 
3: RxD 
4: DTR 
4: DTR 
6: DSR 
20: DTR 
6: DSR 
5: GND 
5: GND 
5: GND 
7: GND 
7: GND 
6: DSR 
6: DSR 
4: DTR 
6: DSR 
20: DTR 
7: RTS 
7: RTS 
8: CTS 
4: RTS 
5: CTS 
8: CTS 
8: CTS 
7: RTS 
5: CTS 
4: RTS 
9: RI  
(not used) 
9: RI 
9: RI 
22: RI 
22: RI