Contec DIO-0808L-PCI, Руководство пользователя

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3. External Connection
32
DIO-0808L-PCI
Connection to the LED
O-20 (CN1 : 21pin)
LED
5.1k 
Output plus common (CN1 : 37pin)
B
oa
rd
s
id
e
Output minus common (CN1 : 20pin)
External
power supply
12 - 24VDC
+
-
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 3.6. An Example to use Output O-00
Example of Connection to TTL Level Input
Output plus common
Output
Output minus common
TTL level input
VCC
Input board
GND
2k 
External
power supply
12 - 24VDC
+
-
Figure 3.7. Connection Example of Output and TTL level Input Signal