Transmission Of The Curve Data - Baumuller b maXX BM3000 Operating Manual

4.8
Operating Modes

4.8.13.2 Transmission of the curve data

The polynomial curve segments are transmitted as a file in the *.bmcam format. Such a
file can be created with ProCam.
The curve data file is always filed in the RAM of the controller at transmission. After re-
starting the device the curve data is not available anymore and therefore must be loaded
again.
There are two different modes for the downloading of curve data. Overwriting the present
file or reloading a second file.
Overwriting the curve data
When overwriting the curve data the present curve file is replaced by the new file, which
was loaded. The overwriting of the file is possible only if there is no polynomial curve
which is processed at the present time. The controller denies overwriting of the present
curve file during an active processing. Overwriting at file transmission is selected by the
file option = 0.
Reloading curve data
When reloading the curve data the file which already is on the drive is combined with the
downloaded file and then is activated. To reload curves at the data transmission the file
option is set to 1. There are two options to activate these reloaded files. The user either
activates the combined file via the control word or via the angular overflow of the master
axis. The selection is made by setting or resetting bit 5 in Z122.2–.
Bit 8 is set in
The drive deletes bit 8 if it was switched over to the combined curve.
The combined curve is not yet operating in the active segment if the switchover is applied
by the control word. The internal interim buffering is updated not until the next segment
change and the combined curve operates. Refer to details in the chapter
buffering of curve segments–
An intentional activation of reloaded files via the control word or the angular master axis
is required at an actively process curve, only. If the coupled operation isn't processed ac-
tively then the existing file is immediately combined with the reloaded file and if the oper-
ation mode is started the next time the combined curve file already will be processed.
If a curve is reloaded but not activated in the active operation the drive combines both of
the curves when inhibiting the drive so that the combined curve is available at the next
enable.
The sequence of the curves is the following:
The following diagram shows this process:
672 Parameter manual b maXX BM3000
Document no.: 5.12001.07
of 820
Z122.1–
and
– One curve is assumed, which exists of two segments with the segment numbers 1
and 2. The user reloads a curve having the segments 1 and 3.
– Segment 1 exists in both curves. The segment from the reloaded curve is taken into
the combined curve.
– Segment 2 exists in the original curve only - therefore it remains in the combined
curve.
– Segment 3 was defined in the reloaded curve only - therefore the combined curve is
extended with segment 3.
Z108.3–
by the drive as soon as a combined curve available.
on page 677.
ZIntermediate
Baumüller Nürnberg GmbH