Contec SPC-8520-LA - Serial Port Connector: CNG1, CNG2

3. Hardware Installations
18
SPC-8520-LA , SPC-8521-LA
Serial Port Connector: CNG1 , CNG2
Serial1 (CNG1) and Serial2 (CNG2) are 10-pin box-headers. Both are onboard serial ports of this
product. The following table shows the pin assignments of these connectors.
RS-232C/422A/485 assigned for Serial2 (CNG2) connector only.
Table 3.5. Serial Port connector
Pin No.
1
2
3
4
5
6
7
8
9
10
RS-232C
DCD
RXD
TSD
DTR
GND
DST
RTS
CTS
RI
N.C.
RS-422A*
TX-
TX+
RX+
RX-
GND
RTS-
RTS+
CTS+
CTS-
N.C.
RS-485*
TX-
TX+
RX+
RX-
GND
N.C.
N.C.
N.C.
N.C.
N.C.
CNG1/CNG2
16
510
*RS-422A/485 supported for Serial2 (CNG2) connector only.
Pin assignment after conversion by attached cable (D-SUB 9Pin Male Connector, No.4-40UNC )
Table 3.6. Attached cable (9pin D-SUB) pin assignment
Pin No.
1
2
3
4
5
6
7
8
9
RS-232C
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
RS-422A
TX-
TX+
RX+
RX-
GND
RTS-
RTS+
CTS+
CTS-
RS-485
TX-
TX+
RX+
RX-
GND
N.C.
N.C.
N.C.
N.C.
15
9
6
CAUTION
- For RS-485, TX+(pin 2) and RX+ (pin 3) must jumper together inside the D type connector.
- TX- (pin 1) and RX- (pin 4) is the same.