Advantech PCM-7130 Manual de usuario Pagina 39

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27 Chapter 2
2.3.6 RS-232/RS-485 COM Port
There are 3 serial ports on the PCM-7130. The COM1 has a DB-9 con-
nector. On the other hand, the COM2 and COM3 (RS-232 and RS-485)
share the same 14-pin header.
2.3.7 DI/DO
There are 8-channel digital input and 8-channel digital output on the
PCM-7130. They can be used for simple on/off control.The high level
voltage is 3.3V.
Warning! Be careful when these DI/DO are used. Surge or
over voltage may damage the circuits.
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