27 Screen page "Oscilloscope"
Cycle time for the measurement acquisition ³ 250 µs.
Various value are graphically displayed in a diagram. You can display up to three variables simultaneously, as a
function of time.
Start
Start recording the data.
Cancel
Stops recording the data
Save
Saves the recorded measurements to a data medium in CSV format (to be evaluated with MS-Excel).
Load
Loads a CSV data file and displays the curves on the oscilloscope diagram.
Channel
Assignment of the displayed variables to the channels. At present, the following variables can be selected:
I_act
Actual torque (current)
I_CMD
Torque setpoint
v_act
Actual velocity
v_CMD
Velocity setpoint
VBUS
DC-link (bus) voltage
FERROR
Following error
Off
Channel is not used
user-defined
Manual entry
For each channel: the range of measurement can be selected automatically (Auto checkbox is active) or
manually (Auto checkbox is inactive, and min./max. values have been entered).
Mem
If this is active when a new curve is recorded, the previous measurement is saved, so that a comparison can be
made between two measurements. The previous measurement curve is displayed in a darker color than the
latest curve. The measurement range settings must be identical for both measurements. If this is not so, the
"Mem" checkbox will be de-activated and locked.
Auto/Min-Max
Change-over of the scaling of the coordinate system from automatic to minimum/maximum
Update
Loads and displays the latest set of data that was recorded, provided that this set has not been erased or
overwritten.
Trigger level
Y-value for triggering.
Trigger position
X-value for triggering (time axis)
Trigger edge
Triggering on the rising or falling edge.
Trigger signal
The current and speed variables can be used as trigger signals. In addition, "Direct" can be used for immediate
(independent) triggering. The setting "user-defined" enables manual entry of a parameter using ASCII.
Resolution
The number of measured points per time unit (storage depth). Setting: fine, normal, coarse
Time/Division
Scaling of the time axis. Select the time/division. Setting: 1 ... 500 ms/div
Total length of the time axis:8*xms/Div
82 Setup Software
Screen page "Oscilloscope" 07/03 BECKHOFF
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