10
The ENDAT-4052i/M System Board
CN7: Box Header Type Connector for COM4 port (RS-232) (2.54mm)
Pin No.
Function
Pin No.
Function
1
DCD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI
5
GND
10
N.C.
D-SUB Type Connector for COM1 ~ COM3 port (RS-232)
Pin No.
Description
Pin No.
Description
1
DCD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI
5
GND
D-SUB Type Connector for COM2 port (RS-422
4 Wire)
Pin No.
Function
Pin No.
Function
1
–TXD
6
NA
2
+RXD
7
NA
3
+TXD
8
NA
4
NA
9
–RXD
5
NA
D-SUB Type Connector for COM2 port (RS-485
2 Wire)
Pin No.
Function
Pin No.
Function
1
Data –
6
NA
2
NA
7
NA
3
Data +
8
NA
4
NA
9
NA
5
NA