3.3.2.5 D-sub 9-pin connector (COM1, COM2): serial communication (RS485, 422)

You can connect D-sub 24-pin connectors (SDIOs) to two ports for external communication. For more details of signal connection, see “4.3.5 Microcomputer module.”

* Internal connections of the controller (miniH6COM COM1, COM2) / * n=1, 2 (COM port number)

Pin number	1	2	3	4	5
Internal connections of the controller	1	2	3	4	5
Name	COMn_422_485 _TX-	COMn_422_485 _TX+	COMn_422 _RX+	COMn_422 _RX-	GND

Pin number	6	7	8	9	-
Internal connections of the controller	6	7	8	9	-
Name	COMn_DSR#	COMn_RTS#	COMn_CTS#	COMn_RI_V#	-