Siemens Simovert Masterdrives Compendium page 488

12.2010
Synchronization of
the slow time slots
at a low bus cycle
time
Synchronization
parameter
assignment
Siemens AG 6SE7087-6QX70 (Version AM)
SIMOVERT MASTERDRIVES
In a number of applications it is necessary to set a low bus cycle time
and at the same time to synchronize the slower time slots. For this
purpose, it is necessary to transfer additional time slot information from
the dispatcher over the SIMOLINK to the transceivers. This information
is generated in the dispatcher at connector K260. It must be transferred
via the SIMOLINK and input to the transceivers at parameter P753. In
parameter P754, the slowest time slot to be synchronized is set.
Example:
The bus cycle time should be as short as possible while at the same
time the synchronization control is synchronized in T
pulse frequency of 5 kHz (P340), the shortest bus cycle time is 0.80 ms
(P746). The dispatcher sets connector K260 to SIMOLINK word 3
(P751 Index 3 = 260) for all transceivers (P753 = 7003). Parameter
P754 is set to 4 (for T
4
Parameters:
♦ P 746: SLB cycle time (dispatcher)
Serves for setting the bus cycle time. The bus cycle time can be set
from 0.20 ms to 6.50 ms in increments of 10 µs. The bus cycle time
of the dispatcher is transferred automatically to the slaves. The bus
cycle time in effect can be upread from parameter r748 Index 15.
♦ P753: Sync. time counter (transceiver)
Input parameter for additional time slot information from the
dispatcher. This parameter must be connected to the SIMOLINK-
connector (K7001 - K7016), which contains the time slot information.
♦ P754: Max. sync. time slot (dispatcher and transceiver)
The slowest time slot n to be synchronized is entered here. This
function will not work unless parameter P753 is connected correctly.
Connectors:
K260: Time counter (dispatcher only)
This connector contains additional time slot information from the
dispatcher.
Compendium Motion Control
) at the dispatcher and at the transceivers.
Communication / SIMOLINK
for all drives. At a
4
8.3-17