Applications And Modes Which Should Be Set - Siemens SIMADYN D FM 458 User Manual

4.4.3 Applications and modes which should be set

Synchronized data
send,
1 cycle deadtime
cycle
Processing time of the
SIMOLINK blocks
Fig. 4-3 Automatic mode (Mode 3)
T0 interrupt
cycle
Processing time of the
SIMOLINK blocks
Cyclic task T1 = T0
Fig. 4-4 External-cyclic mode (Mode 5)
Application Module FM 458 - User Manual
6DD1904-0AE0 Edition 12.2001
Various SL master, dispatcher and slave modes can be set by
appropriately configuring SIMOLINK.
For position-synchronous actual value sensing and setpoint input (e.g.
"virtual shaft" for printing or packaging machines), the jitter-free
(equidistant in time) modes should be set
• External mode (Mode 4),
• Interrupt automatic mode (Mode 3) and
• External cyclic mode (Mode 5)
• Cyclic automatic mode (mode 10) and
(refer to the SIMOLINK function block description @SL).
For the mode 3, 5 and 10, the telegram data of the previous bus cycle are
processed in parallel to the bus cycle and equidistant SIMOLINK
telegrams are sent and received. This allows the shortest SIMOLINK
cycles to be configured. Ideally, this technique is suitable for applications
with "virtual shaft with values which uniformly change", which are
required, for example, for printing machines.
The operating modes automatic mode (Mode 3) with processing in an
interrupt task Ix should be used for jitter-free synchronization of the drives
SYNC Telegram
NOP
Processing time of the
SIMOLINK blocks
Interrupt task Ix
and external-cyclic mode (Mode 5) with synchronization to the basic
sampling time T0.
T0 interrupt
Processing time of the
SIMOLINK blocks
SYNC Telegram
cycle
Processing time of the
SIMOLINK blocks
T0 interrupt
cycle
Processing time of the
SIMOLINK blocks
Configuring
cycle
cycle
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