Contec ADI12-16(PCI), User Manual

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3. External Connection
ADI12-16(PCI)
47
Figure 3.12. Example of connection of open collector output (current sink type)
Reference
For the operation timings for control signal input, see ”Timing of External Control Signals” in
Chapter 6 “Hardware”.
Figure 3.13. Example of connection to mechanical contact
In the above example, the input signal and data (internal logic) on the PC have the following
relationships.
Table 3.1 Relationships between input signal and data (internal logic) on the PC
Internal logic Contact point Input pin voltage level
0 OFF High
1 ON Low
Reference
For the operation timings for control signal input, see ”Timing of External Control Signals” in
Chapter 6 “Hardware”.
Input pin
+Common In
Board
External power supply
12 - 24VDC
Remote device
Common plus
Open
collector output
Common minus
VCC
Opto-coupler
3k
Ω
5.1k Ω
3k Ω
5.1k Ω
+Common In
12 - 24VDC
Contact point
VCC
Input pin
Board
External power supply
Opto-coupler