USB-IK01 User‟s Manual
14
5-2 PCF8574 Test
The file used for the test can be found in the “Software\Example\USB-IK01\PCF8574” folder
of the CDROM, and download “pcf8574.hex” and test it. When executed, the input value of 8574
is periodically transmitted through the serial port. The transmitted contents can be checked using
“COMM.exe”.
If you press “Switch #2” here, the value changes. In [Figure 5-2], you can see that the value has
changed from 0xFB to 0xF9.
[Figure 5-2. PCF8574 Test window
