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A.3
COM1: RS-232
Pin Definition
COM1
Pin
Signal
1
DCD
2
RX
3
TX
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
A.4
COM2: RS-232/422/ 485
The serial port COM2 on the TPC-5000 series are adjustable by BIOS. It can be set
to RS-422 or RS-485 mode. This port is designed with auto data flow control capabil-
ity.In other words, the TPC-5000 series can automatically detect the data flow direc-
tion at this port when the two wired RS-485 communication is activated.
Pin Definition
COM 2
Pin
1
2
3
4
5
6
7
8
9
Signal
RS-422
RS-485
TX-
D-
TX+
D+
Rx+
–
Rx-
–
GND
GND
–
–
–
–
–
–
–
–
35
TPC-5000 Series User Manual
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