Connection Of Devices With Rs232 Port - Dce Type (Modem); Connection To Rs485/Rs422 Bus - CEL-MAR ADA-1044H User Manual

ADA-1044H
RS232 device or PC
RS232 Port
DTE/DB-9M
RxD - 2
TxD - 3
DTR - 4
DSR - 6
RTS - 7
CTS - 8
SG -5

3.2.2. CONNECTION OF DEVICES WITH RS232 PORT - DCE TYPE (MODEM)

To connect the ADA-1044H to device with DCE (eg Modem) RS232 port type, is required RS232 cable CAB-DB9M/DB9M-C-1,8m
available in our offer. Connection example is shown below.
Device with RS232
port DCE type eg
Modem
RS232 Port
DTE/DB-9M
TxD - 2
RxD - 3
DSR - 4
DTR - 6
CTS - 7
RTS - 8
SG -5
Fig 5. DCE type connection of ADA-1044H to device with RS232 interface (eg. modem)

3.3. CONNECTION TO RS485/RS422 BUS

RS485/RS422 interface at ADA-1044H is available on terminal block described as: Tx+/A, Tx-/B, Rx+, Rx- (IN) and T1+/A1, T1-/B1,
R1+/A2, R1-/B2, T2+/A3, T2-/B3, R2+/A4, R2-/B4. RS485/422 bus need proper cabling.
Connection the GND terminals of RS485/422 interfaces devices connected to RS485/422 bus, should be done in case of potential
difference, which makes data transmission is improper .
DB-9F
socket
Cable CAB-DB 9F/DB9M-S-1,8m
2
3
4
6
7
8
5
Fig 4. ADA-1044H connection to RS-232 port of computer
Cable / Adapter
DB-9F
CAB-DB9M/BD9M-C-2m /
socket
ADP-DB9M/DB9M-C
2
3
4
6
7
8
5
ADA-1044H
DB-9M
RS232
plug
connector
2 Tx -2
3 Rx -3
4 DSR -4
6 DTR -6
7 CTS -7
8 RTS -8
5 GND -5
ADA-1044H
DB-9M
RS232
plug
connector
Tx -2
2
Rx -3
3
DSR -4
4
DTR -6
6
CTS -7
7
RTS -8
8
GND -5
5
6
RS485/422
connector
T1+/A1
Rt
T1-/B1
R1+/A2
Rt
R1-/B2
T2+/A3
Rt
T2- /B3
R2+/A4
Rt
R2-/B4
Vss-
Vss+
Power Supply
Vss+
Vss-
RS485/422
connector
T1+/A1
Rt
T1-/B1
R1+/A2
Rt
R1-/B2
T2+/A3
Rt
T2- /B3
R2+/A4
Rt
R2-/B4
Vss-
Vss+
Power Supply
Vss+
Vss-