Assignment Of The Com 2 - Siemens SIMATIC RI 45 PIII Series Manual

Motherboard
2.7.9

Assignment of the COM 2

The interface is controlled by means of a ribbon cable from the basic module
(X911) to the back panel.
Figure 2-5
2-16
Pin-No.
1
2
3
4
5
6
7
8
9
Housing
Serial COM 2 port on the rear panel
Meaning
DCD
RxD
TxD
DTR
Ground
DSR
RTS
CTS
R1
Ground
RI 45 PIII, Manual
C79000-G7076-C817-01
Pin-No.
X911
1
3
5
7
9
2
4
6
8