MVS-8100 Hardware Description
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Cognex MVS-8100M Hardware Manual
Trigger Input
The trigger input is used to initiate the acquisition of an image from the currently selected
camera port. A pair of connections (TRIG+ and TRIG–) provide an optically isolated
trigger input. To activate the interrupt, between 4 and 13 volts must be applied to the
terminals. If your Cognex software package allows it, the input trigger's polarity is
configurable with software commands.
The schematic of the external trigger input circuit is shown in Figure 21.
Figure 21. Trigger input schematic
Status Output
The status output applies to the currently selected camera, and is available for use by
your application. The signal connections are optically isolated. You can use the status
output in one of two ways:
•
Attach the STSOP and STSOR pins to an optically isolated device.
•
Attach STSOP to PWR and STSOR to GND, and use STSO as a TTL output (the
current-limiting resistors on PWR and GND protect the 8100 and the host
computer).
TRIG+
VCC
4.7K
1N916
310
Ω
½ W
TRIG–
ILD2
