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40 iPORT Advanced Features User Guide
The Device Key and Group Mask must match the value you specified in step 5 of “To configure
the video interface to perform an action command” on page 38.
4. Optionally, you can select the
Scheduled
check box and specify the time at which you want the
action command to be executed in the
Scheduled Time
box.
GevIEEE1588 must be True to send a scheduled action commend, or you will receive a No Ref Time
acknowledgement.
5.
Click Send to broadcast the action command to all devices that meet the criteria specified in step 3
and are connected to the NIC selected in step 2.
Acknowledgements appear in the Acknowledges section.
Action Command Acknowledgements
As outlined in version 2.0 of the GigE Vision standard, devices are not required to send an
acknowledgment in response to an action command. For devices that require an acknowledgement, eBUS
Player includes the option to force the device to send an acknowledgement.
The following table provides descriptions of the possible action command acknowledgements.
Table 10: Action Command Acknowledgement Descriptions
Acknowledgement Description
No Ref Time IEEE 1588 is not enabled; you must enable IEEE 1588 to send a schedule
action
Late The action command was executed immediately because it was sent when
the scheduled time value was configured for a time earlier than the current
GevTimestampValue