Danfoss MCO 305 Design Manual page 143

MCO 305 Design Guide
Variable Curve
If the application currently executing on the controller is known and has been compiled by APOSS, then
curves can be added to the Oscilloscope for any variable used within the program. As with SDO curves,
there are three methods of recording the data for the curve:
Polled value – When an oscilloscope run is started, the Oscilloscope will regularly "poll" the SDO by sending
an "SDO read request" to the controller. Polled SDO curves will be added to the "Curve Selection List" under
the "Other Curves" heading.
Free Run group – When an oscilloscope run is started, all SDO's in the group will be configured into a single
PDO message. The controller will then automatically assemble and send the PDO message to the Oscillo-
scope on a regular cycle. These SDO curves will be added to the "Curve Selection List" under the associated
group heading.
Single Shot group – When an oscilloscope run is started, all SDO's in the group will be configured into a
TESTSETP array. When the run ends, the Oscilloscope will upload the TESTSETP array and extract the SDO
data. These SDO curves will be added to the "Curve Selection List" under the associated group heading.
NB!:
The Oscilloscope cannot verify that the program running on the controller is identical to the pro-
gram selected by the user when adding a Variable curve. It is the user's responsibility to ensure
that this is true. A mismatch will not cause the Oscilloscope to fail but it also will not generate the
correct results for the curve.
Controller
This is the controller that will be associated with the
curve. If a polled curve is being added, then the
user will be able to select a different controller for
the curve. Each polled curve can be associated with
a different controller. If the curve is being added to
a group, then the curve must be associated with the
controller that the group is associated with.
Group
The variable can either be polled or added to an
existing group. If more than one group exists, then
the user will be able to select the group to which the
variable is to be added.
Program
This is the program containing the variable of interest. It is the responsibility of the user to ensure that this
is the program that is executing on the controller.
NB!:
Note that the file extension of the program file will be ".ad$". This is the cross reference file
generated by the APOSS compiler. (See Settings → Compiler)
The Browse button can be used to select a different program file.
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