Cognex In-Sight 1450, Инструкция по установке и справочник

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Model 1450 I/O Expansion Module Installation & Reference
To trigger from a PNP (pull-up) photo-detector or PLC output, connect pin 4 (TRG+) to the output
of the detector and connect pin 3 (TRG-) to 0V. When the output turns ON, it pulls TRG+ up to
24V, energizing the In-Sight camera's trigger.
Figure 3-2: Acquisition Trigger Input (PNP Source)
To trigger from a differential input source, connect the negative input to pin 3 (TRG-) and the
positive output to pin 4 (TRG+). When a differential voltage exists, the In-Sight camera trigger is
energized.
Figure 3-3: Acquisition Trigger Input (Differential Source)
An LED indicator is provided for the acquisition trigger and illuminates when an approximate
potential of >2V is supplied across the TRG+ and TRG- terminals.
NOTE Even if the TRG LED indicator illuminates, this does not guarantee that the logical threshold has been
crossed. It only means that the TRG+ and TRG- terminals are properly connected to the trigger source.
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