The Sequencer And The Active Set - Basler acA2040-55 User Manual

AW00123409000
When the sequencer feature is in sequencer mode, the parameter values of the
current sequencer set cannot be changed using the pylon API or the pylon Viewer.
Only those sequencer set parameter values are displayed that were active before
the sequencer was enabled. You can not "see" the parameter values delivered by
the current set.
We recommend that you do not attempt to read or change any of the sequence
parameters when the sequencer feature is enabled.
Because your parameter values for the sequencer sets only reside in volatile
memory, the parameter values will be lost and reset to the default values if the
camera is reset or switched off. You will then have to populate the sequencer sets
with your parameter values again.
Note also that sequencer sets can not be saved in user sets.
When the camera enters the over temperature mode. while the sequencer is in
sequencer mode, the sequencer stops operating. When the camera exits the over
temperature mode the sequencer does not resume operation. However, the
parameter values for the sequencer sets are preserved in volatile memory.
7.7.2

The Sequencer and the Active Set

During operation, the camera is controlled by a set of configuration parameters settings that reside
in the camera's volatile memory. This set of parameter settings is known as the "active set" .
When you use the pylon API or the pylon Viewer to make a change to a camera parameter such as
the Gain, you are making a change to the active set. And because the active set controls camera
operation, you will see a change in camera operation when you change a parameter value in the
active set. For more information about the active set, see Section 7.21 on
The parameters in the active set can be divided into two types:
Non-sequencer parameters: The parameter values in the active set cannot be changed using

the sequencer feature. This also means that the non-sequencer parameter values can not be
configured for user sets.
Sequencer parameters: The parameter values in the active set can be changed almost

instantaneously by loading a sequencer set.
The "current set" is the sequencer set whose parameter values were loaded into the active set
with the latest sequencer set advance. The parameter values remain in the active set until they
are replaced by the parameter values of the next sequencer set.
The sequencer parameters can be divided into two types (see
Basler ace USB 3.0
page 327.
Figure 87):
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