
3. External Connection
PIO-32/32B(PCI)V
31
Connecting Input Signals
Connect the input signals to a device which can be current-driven, such as a switch or transistor output
device.
The connection requires an external power supply to feed currents.
The board inputs the ON/OFF state of the current-driven device as a digital value.
Input Circuit
Figure 3.4. Input Circuit < PIO-32/32B(PCI)V >
The input circuits of interface blocks of the PIO-32/32B(PCI)V are illustrated in Figure 3.4. The
signal inputs are isolated by opto-couplers (ready to accept current sinking output signals). The board
therefore requires an additional power supply isolated from the PC system to drive the photo-isolated
circuits. The board offers you an on-board isolated 12VDC power supply in option. In this case (using
external supply), 5.1mA current is requested each channel on 24VDC (2.6mA on 12VDC).
Please refer to Selecting Power Supply, and choose the proper supply by jumps.
Vcc
Vcc
JP2/JP4
+12V
JP3/JP5
External device
Plus
common
Input
pin
Board
External
power supply
12 - 24VDC
Optocoupler
* Input pin represents I-xx.
un-connect
Swich
Swich
Input
pin
Optocoupler
Minus
common
un-connect
CAUTION
Содержание PIO-32/32B(PCI)V
Страница 1: ...PC HELPER Digital I O Board with Opto Isolation for PCI PIO 32 32B PCI V User s Guide CONTEC CO LTD...
Страница 7: ...vi PIO 32 32B PCI V...
Страница 17: ...1 Before Using the Product 10 PIO 32 32B PCI V...
Страница 43: ...3 External Connection 36 PIO 32 32B PCI V...
Страница 47: ...4 Function 40 PIO 32 32B PCI V...
Страница 53: ...5 About Software 46 PIO 32 32B PCI V...
Страница 58: ......