Installation
3886_en_A
PHOENIX CONTACT
11
2.3
Data interfaces
2.3.1
Connecting the V.24 (RS-232) cable
The D-SUB 9 connector may function as an RS-232, RS-422, or RS-485 interface. The
RS-232 interface is a data terminal equipment (DTE) device that behaves like a personal
computer (PC). A null modem cable or adapter is required to connect to a PC.
Connect the GW PN/ASCII... to the V.24 (RS-232) device to be connected (for example, a
PC) by way of the PSM-KA-9SUB 9/BB/2 METER V.24 (RS-232) cable (Order No.
2799474). The cable is an interface cable with 1:1 connected contacts.
The V.24 (RS-232) interface of the GW PN/ASCII... is a DTE assignment.
Table 2-1
D-SUB 9 to RS-232 pin out
GW PN/ASCII...
End device
RS-232
D-SUB 9
(DCE)
D-SUB 9
(DTE)
D-SUB 25
(DCE)
D-SUB 25
(DTE)
1
DCD
1
4
8
20
2
RxD
2
3
3
2
3
TxD
3
2
2
3
4
DTR
4
1, 6
20
6, 8
5
GND
5
5
7
7
6
DSR
6
4
6
20
7
RTS
7
8
4
5
8
CTS
8
7
5
4
9
RI
9
-
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