Technology Option F01 08.2012
6SE7087-6QX70 (Version AN) Siemens AG
9-8 Compendium Motion Control SIMOVERT MASTERDRIVES
♦ The path/angle setpoint can be defined by a "real" machine axis
(internal or external) or by a software "virtual" master.
♦ 2 interrupt-capable digital inputs for the detection of synchronization
signals, e.g. printing indices
The synchronism block should be called up in time slot T4
(2953.33 = 4). Calling the block in shorter times slices (U953.33 < 4) is
not permissible.
The serial SIMOLINK setpoint interface allows angle-synchronous
connection of all drives involved in the angular synchronization.
SIMOLINK is a high-speed fiber-optic ring which operates at 11 Mbaud
and transmits the angle setpoints from drive to drive or from a host
system to the drives. For example, SIMOLINK needs only 630 µs to
transfer 100 values of 32 bits each. Special SYNC messages enable
quartz-accuracy, jitter-free synchronization of the sampling times of up
to 200 connected converters. The result is highly dynamic, angle-
synchronous drive operation. The master pulse generator is not
normally required, since its function is reproduced by software and
transmitted angle-synchronously via SIMOLINK (the principle of the
"virtual master axis [831]"). Conventional operation with a real master,
i.e. a master pulse generator, is naturally also possible [833].
Thanks to SIMOLINK, the master drive function can be assigned to any
drive or to a higher-level control system. This is particularly necessary
for machines whose drives are removed from the drive train, e.g. for
shaftless printing machines. The master drive function can also be
performed by a drive that is removed temporarily from the drive system.
SIMADYN D, SIMATIC FM458 or SICOMP SMP can be used as the
host control system; SIMOLINK interfaces are available for these
systems.
The electronic gearbox is a simple substitute for all types of variable-
speed gearbox and shafts. The exact gear factor is defined as a
fraction with numerator and denominator (16 bits each). The electronic
gearbox can be used with all encoders mounted on Siemens motors,
including absolute encoders and encoders with SSI-standard protocols.
NOTE
SIMOLINK as
synchronization
control backbone
[140...160]
Electronic gearbox
[835]
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