Rockwell Automation Allen-Bradley PowerFlex 700S - Page 195

Rockwell Automation Publication PFLEX-RM003E-EN-E - January 2011 195
Detailed Drive Operation Chapter 1
7. To play back the data, you can monitor parameters 572 [Trend Out1 DInt]
or 573 [Trend Out1 Real], 576 [Trend Out2 DInt] or 577 [Trend Out2
Real], 580 [Trend Out3 DInt] or 581 [Trend Out3 Real], and 584 [Trend
Out4 DInt] or 585 [Trend Out4 Real], depending on the data type. The
output parameters can be monitored in DriveObserver, or you can link
analog outputs to the output parameters and monitor the analog output
with a chart recorder or oscilloscope. Then set parameter 556 [Trend
Control], bit 15 “Auto Output” to automatically play back the output
trend data at the rate entered in parameter 559 [Trend Rate]. Note that
data can be played back at a slower rate than it was recorded by changing
[Trend Rate] before turning on [Trend Control], bit 15 “Auto Output”.
Additional Trend Parameters:
Parameter 567 [Trend Mark DInt] marks the start of data for trend buffers that
are using integer data. The trend marker can be used to provide a scope trigger
signal for the Auto Output function.
Parameter 568 [Trend Mark Real] marks the start of data for trend buffers that
are using real data. The trend marker can be used to provide a scope trigger signal
for the Auto Output function.
Parameter 569 [TrendBuffPointer] selects the trend buffer element to be
displayed in the trend output parameters when the trend function is inactive (not
collecting data samples). A zero value points to the element that corresponds to
the trigger event. Negative values point to pre-trigger data. Positive values point
to post-trigger data.When the Auto Output function is running, this parameter
will automatically sequence through it's full range, at a rate set by parameter 559
[Trend Rate].