Debugging
W15 SERIES
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5.2.9 COM Port
It provides up to six COM ports.
COM1
～
COM6 support RS-232/RS-422/RS-485
mode, RS-232 by default. Their pin definitions are as follows:
Signal Name
Pin
RS-232
(Default)
RS-422
RS-485
1 DCD# TXN DATA-
2 RXD TXP DATA+
3 TXD RXP NC
4 DTR# RXN NC
5 GND GND GND
6 DSR# NC
NC
7 RTS# NC
NC
8 CTS# NC
NC
COM1
～
COM6
9 RI# NC NC
Note: Under RS-485 mode, data receive/send direction is controlled by RTS.
COM mode configuration:
It can be selected via jumper on the I/O board, and please refer to the above table for
its pin definition.The detailed configuration is as follows:
