Contec PIO-16/16L(CB)H, Руководство пользователя

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3. External Connection
32
PIO-16/16L(CB)H
Connection to the LED
PI
O
-16
/16L(C
B)H
s
id
e
O-20 (CN1 : 21 pin)
LED
5.1k Ω
Output plus common (CN1 : 37 pin)
Output minus common (CN1 : 20 pin)
External
power supply
12 to 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-20
Example of Connection to TTL Level Input
Output plus common
Output
Output minus common
TTL level input
VCC
Input card
GND
2k Ω
External
power supply
12 to 24VDC
+ -
Figure 3.7. Connection Example of Output and TTL level Input Signal