Lenze E94ARNE Regenerative power supply - Manual (Page 171)

EDS94ARNExxxx EN 2.3 - 06/2014
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9400 regenerative power supply module | Parameter setting
Oscilloscope
Function description
7.2 Function description
Establish an online connection to the regenerative power supply module and use the
oscilloscope user interface of the »Engineer« to select the trigger condition, the sample
rate and the variables to be recorded.
When the measurement is started, the set parameters are transferred to the regenerative
power supply module and checked. If invalid settings are found, the oscilloscope sends an
error. Otherwise, the measurement is started.
With an online connection, the measured data now stored in the regenerative power
supply module are transferred to the »Engineer« and graphically represented on the
oscilloscope user interface as soon as the measurement has been completed.
Recording variable values
The operating system calls the oscilloscope in fixed 1 ms-cycles, i.e. the oscilloscope can
record variable values with a sample rate of max. 1 kHz.
Recording system variable values of the internal control
Unlike the variables declared in the application, the system variables of the internal control
can also be recorded with a sample rate higher than 1 kHz.
Recording task-related I/O variable values
When selecting the variables to be measured, it is possible to indicate a task reference for
these variables. If the behaviour of a certain task is to be examined, you can indicate the
task reference to exactly record the values valid for the task run-time.
 The variable values are recorded during the process output image generation of the
task.

Note!
In the control system recordings with a time-based resolution of 31.25 μs and
125 μs are not possible!
The system variables of the internal control have a cycle offset of 2 ... 3 ms with
respect to all other variable values!