Advantech TPC-1881WP Series, Руководство пользователя

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TPC-XX81WP
User Manual
40
E.1 COM1: RS-232
Pin Definition
COM1
Pin Signal
1 NDCD
2 NRX
3 NTX
4 NDTR
5 GND
6 NDSR
7 NRTS
8 NCTS
9 NRI
E.2 COM2: RS-232/422/485
The serial port COM4 on the TPC-1581WP 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
capability.In other words, the TPC-1581WP series can automatically detect the data
flow direction at this port when the two wired RS-485 communication is activated.
Pin Definition
COM 2
Pin
Signal
RS-422 RS-485
1 TX- D-
2 TX+ D+
3 Rx+
–
4 Rx-
–
5 GND GND
6
– –
7
– –
8
– –
9
– –