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A
Appendix: Connectors and Cables
A.1
Pin Assignments for the Communication Interfaces
A.1.1
Serial Plug (COM; Sub-D 9pol)
Interface:
COM (RS 232)
Plug type:
Sub-D 9pol; female
Pin:
Signal:
1
DCD
2
RxD
3
TxD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Interface:
COM (RS 485)
Plug type:
Sub-D 9pol; female
Pin:
Signal:
3 (MG101)
RxD/TxD+
9 (MG102)
5
GND
8
RxD/TxD-
Note: Do not use pins that are not listed here!
User manual
GPRS/EDGE/UMTS routers MG101, MG102
3. Jul 2009
Figure 1: Sub-D 9pol plug female
Table 1: Pin assignment COM interface RS232
Table 2: Pin assignment COM interface RS485
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