47 PPC-3150/3170 User Manual
Chapter 3 Jumper Setting
3.2 External COM Ports and Pin Definitions
Figure 3.2
COM 1 and COM 2: RS232, COM1 Pin9 support 5V/12V input.
COM 3: RS-422/485
COM1:
COM Pin9 is set as RI signal by default and also can be set as 5 V or 12 V output via
jumper setting.
Note! COM2 does not support RING function.
Pin COM 1 COM 2
COM4/COM5
(Internal)
1 DCD DCD DCD
2 RXD RXD RXD
3 TXD TXD TXD
4DTRDTR DTR
5 GND GND GND
6 DSR DSR DSR
7RTSRTS RTS
8CTSCTS CTS
9 RING or 5V/12V input For UPS RING
10 +5V
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