3. External Connection
DI-64T2-PCI, DO-64T2-PCI
33
Connecting Output Signals
Output Circuit
* O-xx represents an output pin.
One polyswitch is connected for Vcc(+5V) terminal.
Figure 3.8. Output Circuit < DO-64T2-PCI >
The output circuit of interface is illustrated in Figure 3.8. Signal outputs are open-collector outputs;
individual output signals are sent to the external device as negative logic signals. Note that each signal
output must be pulled up at the external device as it is not pulled up internally.
When the PC is turned on, all output are reset to OFF.
Connection to the LED
When "1" is output to a relevant bit, the corresponding LED comes on.
When "0" is output to the bit, in contrast, the LED goes out.
Figure 3.9. An Example to use Output O-40 < DO-64T2-PCI >
External device
Output pin
Vcc
GND
GND
Un-connected
Board
+5V output
Signal
commmon
Vcc
74LS07
(Open-collector)
Over current
protection
10kW
CAUTION
O-40 (CN1 : B03 pin)
LED
2k
Ω
Vcc (CN1 : B47 pin)
B
oa
rd
s
id
e
Содержание DI-64T2-PCI
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Страница 15: ...1 Before Using the Product 8 DI 64T2 PCI DO 64T2 PCI ...
Страница 31: ...2 Setup 24 DI 64T2 PCI DO 64T2 PCI ...
Страница 45: ...4 Function 38 DI 64T2 PCI DO 64T2 PCI ...
Страница 51: ...5 About Software 44 DI 64T2 PCI DO 64T2 PCI ...
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