Fig 5. Connection to RS-232 computer port
3.2.2. CONNECTION OF DEVICES WITH RS232 PORT - DCE TYPE (MODEM)
In purpose of connecting ADA-1040 to RS232 port type DCE (eg modem), should be used the RS232 cable CAB-DB9M/DB9M-C-
1,8m (available in CEL-MAR offer). Example connection is shown below.
Fig 6. Connection to device with RS232 type DCE
6
ADA-1040
RxD - 2
TxD - 3
DTR - 4
DSR - 6
RTS - 7
CTS - 8
PC
SG -5
RS232 port
DTE/DB-9M
ADA-1040
RS485/422
socket
Vss+
Vss-
Power
supply
RS232
DCE/DB-9F
CTS -7
RTS -8
GND -5
Vss-
Vss+
Tx -2
Rx -3
DSR -4
DTR -6
Tx +
Tx -
Rx +
2
3
4
6
7
8
5
CAB-DB 9F/DB9M-S-1,8m
cable
DB-9F
socket
2
3
4
6
7
8
5
DB-9M
plug
Rx -
TxD - 2
RxD - 3
DSR - 4
DTR - 6
CTS - 7
RTS - 8
Device with RS232
port (DCE type)
eg. Modem
SG -5
RS232 port
DCE/DB-9M
ADA-1040
RS485/422
terminal
Vss+
Vss-
Power
Supply
RS232
DCE/DB-9F
CTS -7
RTS -8
GND -5
Vss-
Vss+
Tx -2
Rx -3
DSR -4
DTR -6
2
3
4
6
7
8
5
Cable / Adapter
CAB-DB9M/BD9M-C-2m /
ADP-DB9M/DB9M-C
DB-9F
socket
2
3
4
6
7
8
5
DB-9M
plug
Tx +
Tx -
Rx +
Rx -
