COMMELL P4LA - Manual (Page 52)

P4LA User’s Manual System Resources
I/O Port Address Map 52
A.5 <Serial Port>
Connector: COM1
Type: 9-pin D-sub male connector on I/O Panel
Pin Description Pin Description
1 DCD 6 DSR
2 SIN 7 RTS
3 SO 8 CTS
4 DTR 9 RI
5 Ground
Connector: COM2
Type: 9-pin D-sub male connector on bracket for COM2
Pin Description Pin Description
1 DCD/422TX-/485- 2 RXD/422TX+/485+
3 TXD/422RX+
4 DTR/422RX-
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N/C
Connector: COM 3/4/5/6
Type: 9-pin D-sub male connector on bracket
Pin Description Pin Description
1 DCD- 6 DSR-
2 SIN- 7 RTS-
3 SO- 8 CTS-
4 DTR- 9 RI
5 Ground 10 N/C
1
2
3
4
5
6
7
8
9
10
2 1
9
10
2 1
9