5. Each Component Function
72 User’s Manual
General-purpose I/O and Remote Reset
The BOX-PC is equipped with three general-purpose insulated
signals each for input and output. The input signals can also be
used for interrupt input or remote reset input.
Specifications
[ Input ]
- Input specifications : Current-driven input by photocoupler
insulation.
- Input resistance : 4.7kΩ
- Input signal count : 3 [One of them can be used for remote
reset and interrupt input. (bit2<fixed>)]
- Input protection circuit : Equipped with a reverse-connection
protection diode
- Input response time : Less than 100µsec
- External circuit power supply: 12-24VDC (±10%)
[ Output ]
- Output specifications : Open-collector output by photocoupler
insulation
- Output rating : Max. 30VDC, 100mA
- Output signal count : 3 [One of them can be used for WDT
alarm output. (bit2<fixed>)]
- Output response time : Less than 300µsec
[ Common ]
- I/O addresses 4000h and 4001h
How to Use General-purpose I/O and Remote Reset
Output data to port 4001h to set PI0, PI2 or PO2 mode.
...
Event output
control
Implement input and output with port 4000h.
...
I/O
Figure 5.14. How to Use General-purpose I/O and Remote
Reset