Siemens SIMOVERT MASTERDRIVES Manual page 707

05.2006
Nesting positioning
and synchronization
in a sampling time
9.4.14 Machine data [804]
Siemens AG 6SE7087-6QX70 (Version AG)
SIMOVERT MASTERDRIVES
The technology functions are not calculated until they have been
nested in a sampling time. One parameter each is provided for nesting
the following functions in a sampling time:
♦ Positioning modes (including synchronization)
Parameter U953.32 [802.8]
♦ Synchronization as independent free block
Parameter U953.33 [802.8]
♦ Virtual master axis (can also be used without F01)
Parameter U953.34 [832.8]
♦ Generation of positioning control signals
Parameter U953.30 [809.5]
Please refer to [702] and the notes in [802.8] for more information on
nesting of technology functions in a sampling time.
Positioning including synchronization can be nested in a sampling time
with parameter U953.32. The value 4 is the preferred value for this
parameter (= 16*T0 = 3.2 ms at 5 kHz converter clock frequency).
Synchronization can also be activated as an independent block,
preferably in T4 [U953.33 = 4]; in this case the mode manager is not
used and the positioning modes must remain deactivated with
U953.32 = 20 (see the section below entitled "Synchronization mode -
overview" for information on the differences in synchronization).
The mode manager switches the output signals from the active mode
through to the signal outputs [802.5].
The machine data are used to define centralized settings required from
the perspective of the working machine and the mechanical transfer
elements for positioning and synchronization. The machine data are
abbreviated with "MD..." in all documents. They have the same
meaning for technology option F01 and for the centralized technology in
SIMATIC M7.
MD1 to MD50 are listed in a brief overview in [804]. They are mapped
onto MASTERDRIVES parameters U501.01 to 501.50.
You will find detailed information on all machine data in the
"Machine data" section of the Function Description in manual /1/.
Please note that the decimal point has been omitted from all
machine data on sheet [804], since they appear in this format in
the MASTERDRIVES parameter display. In manual /1/, however,
the machine data are presented in the format used in the OP
screens (see also /2/, i.e. occasionally with decimal points).
Compendium Motion Control
Technology Option F01
9-59