Technology Option F01 08.2012
6SE7087-6QX70 (Version AN) Siemens AG
9-118 Compendium Motion Control SIMOVERT MASTERDRIVES
9.5.6 SIMOLINK
The SIMOLINK drive interface is the "backbone" of the synchronization
function. SIMOLINK distributes path/angle setpoints and velocity
setpoints from the master axis to the slave axes quickly and time-
synchronously. The synchronization of the sampling times of all stations
is assured by special SYNC messages.
The "Communication" chapter in this Compendium provides
detailed information on the configuration and commissioning of
SIMOLINK.
The list below provides a brief overview:
SIMOLINK has the following features:
♦ Fiber-optic ring with plastic or glass fiber
♦ Baud rate 11 Mbaud
♦ Max. 200 nodes per fiber-optic ring
♦ Polling time with 100 data messages each with 32 bits: 630 µsec
♦ Jitter-free synchronization of the sampling times of all stations by
special SYNC messages
♦ Peer-to-peer configuration (drive-to-drive interface without master)
or master/slave configuration possible
♦ Max. cable length:
• 40 m with plastic
• 300 m with glass
• 1000 m for complete ring
♦ Up to 1000 double word message frames can circulate on the
SIMOLINK ring.
♦ Binectors and connectors allow flexible wiring of signals from and to
the SIMOLINK per software in MASTERDRIVES MC [150...160].
Applications of SIMOLINK:
♦ Replacement of mechanically coupled moving axes with individual
drives
♦ Transmission of angle setpoints between master and slave axes for
angular synchronization and cam function
♦ Replacement of conventional RS485 peer-to-peer connection for
data exchange between SIMOVERT power converters
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