Connection To The Led - Contec DIO-3232LX-USB User Manual

Connection to the LED

Output plus common (CN1 : B19pin)
O-40 (CN1 : B03pin)
Output minus common (CN1 : B01pin)
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 3.8. An Example to use Output O-20
Example of Connection to TTL Level Input
Output plus common
Output
Output minus common
Figure 3.9. Connection Example of Output and TTL level Input Signal
DIO-3232LX-USB
5.1k Ω
LED
External
power supply
12 - 24VDC
- +
2k Ω
+
External
power supply
12 - 24VDC
-
Input unit
Vcc
TTL level input
GND
3. External Connection
31