Contec bx200 SERIES, User Manual

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4. Each Component Function
40
BX-2x0-DCxxxx, BX-2x0D-DCxxxx User’s manual
General Purpose Input/Output and Remote Power On/Reset
This product is equipped with three general purpose insulation-type inputs and outputs. Inputs can be
used as remote power on and remote reset inputs.
It is necessary to configure BIOS settings to use an input signal as a remote power on or remote reset
signal.
For details on configuring settings, refer to "Integrated Peripherals" in Chapter 5, "BIOS Setup."
Specifications
[ Input ]
- Input specifications : Current-driven input by photocoupler insulation.
- Input resistance : 4.7k
Ω
- 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 100
μ
sec
- 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 300
μ
sec
Usage
I/O ports use address 2a0/2a4h.
This section gives examples of flowcharts and programming related to using general purpose input and
output.
(1) Example flowchar
Open
: Outputs command 87h to port 2a0h two times.
Input
: Outputs command 90h to port 2A0h and then reads port 2a0h two times.
The second read data is general purpose input data.
Output
: Outputs command 91h to port 2a0h and then outputs data to port 2a0h.
Close
: Outputs command aah to port 2a0h.