Casio IT-2000W manual Serial Communication, Available Interfaces

2.3.5 Serial Communication

Available Interfaces

Port	I/O Address	Name	Uses	Remark
COM1	3F8h-3FFh	8-pin serial I/F	Connection with a barcode
			reader or PC
COM2	2F8h-2FFh	14-pin serial I/F	Connection with an	Can be switched
			expansion I/F device	via the system
		IrDA 1.0	Communication with an I/O	library.
			Box or between two IT2000s
COM3	3E8h-3EFh	(Modem card)	Modem card	If a modem card is
				used.
COM4	2E8h-2EFh	IrDA 1.1	Communication with an I/O	Direct control not
			Box or between two IT2000s	possible

COM1

This is a COM port for RS-232C communication. This port can be used after turning on the power to

the 8-pin serial I/F via the system library. The 8-pin serial I/F is located on the side panel of the main unit.

Pin assignment								Pin 1.	SD
								Pin 2.	RD
								Pin 3.	RS
								Pin 4.	CS
								Pin 5.	Vcc
		￿		￿		￿
								Pin 6.	GND
	￿		￿		￿￿		￿
								Pin 7.	ER
								Pin 8.	DR

Fig. 2.10

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