COM2

Either the 14-pin serial I/F or IrDA 1.0 can be assigned to this COM2 port depending on the system library setup. Both the 14-pin serial I/F and IrDA 1.0 can be used as a normal RS-232C interface. By default, the COM2 channel is not assigned to either device. Therefore, always use the system library to designate either the 14-pin serial I/F or IrDA, then turn on the power. The 14-pin serial I/F is located on the rear of the panel.

Pin assignment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

1.

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

2.

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

3.

N.C.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

4.

SD

 

 

 

8

 

9

 

10

 

11

 

12

 

13

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

5.

RD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

6.

RS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

7.

ER

 

 

 

1

 

2

 

3

 

4

 

5

 

6

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

8.

CS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

9.

CI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 10. DR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 11. CD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 12. EXTSW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 13. VH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 14. VH

Fig. 2.11

COM3

A modem card, if one is inserted in the PC card slot, can be used as the COM3 port. (refer to Chapter 2.3.6 “PC Card”.)

COM4

The COM4 port is dedicated for IrDA 1.1. It is used internally by the FLINK Utility. Therefore, it cannot be directly controlled by application programs.

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Casio IT-2000W manual COM2