3. External Connection
PIO-16/16B(PCI)H, PI-32B(PCI)H, PO-32B(PCI)H
33
Connecting Input Signals
Connect the input signals to a device which can be current-driven, such as a switch or transistor output
device.
The board inputs the ON/OFF state of the current-driven device as a digital value.
Input Circuit
Figure 3.5. Input Circuit <PIO-16/16B(PCI)H>, <PI-32B(PCI)H>
The input circuits of interface blocks of the PIO-16/16B(PCI)H and PI-32B(PCI)H are illustrated in
Figure 3.5. The signal inputs are isolated by opto-couplers (ready to accept current sinking output
signals). To drive the input section of the board, therefore, the on-board internal power supply must be
used or an external power supply is required. The power requirement for each input pin is about 5.1
mA at 24 VDC (about 2.6 mA at 12 VDC).
See the “Selecting the internal or external power supply” section to connect the jumpers depending
on the power supply to be used.
External device
Board
Vcc
Vcc
Optocoupler
Optocoupler
Input pin
Input pin
Plus common
Swich
Swich
* Input pin represent input signals.
un-connect
un-connect
Minus common
External
power supply
12 - 24VDC
JP3
<PIO-16/16B(PCI)H>
JP1/JP3 <PI-32B(PCI)H>
+12V
JP4
<PIO-16/16B(PCI)H>
JP2/JP4 <PI-32B(PCI)H>
CAUTION
Summary of Contents for PI-32B(PCI)H
Page 15: ...1 Before Using the Product 8 PIO 16 16B PCI H PI 32B PCI H PO 32B PCI H ...
Page 45: ...3 External Connection 38 PIO 16 16B PCI H PI 32B PCI H PO 32B PCI H ...
Page 49: ...4 Function 42 PIO 16 16B PCI H PI 32B PCI H PO 32B PCI H ...
Page 55: ...5 About Software 48 PIO 16 16B PCI H PI 32B PCI H PO 32B PCI H ...