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Processing time of the
SIMOLINK blocks
Cyclic task Tx
Fig. 4-7
Non-synchronous-mode (Mode 1)
In the timer mode (Mode 2), data is directly output after calculation in an
interrupt task Ix which assigns the processing of the SIMOLINK blocks a
higher priority.
Timer interrupt
Processing time of the
SIMOLINK blocks
Interrupt task Ix
Fig. 4-8
Timer-mode (Mode 2)
In these non-synchronous SL-master modes, which exhibit jitter, the
coupled drives cannot be operated with position synchronism if the SYNC
telegram is sent in the time intervals which depend on the actual
configuring. This allows the fastest possible data transfer between SL
master (Mode 1 or 2) and the slave (Mode 0).
Reading telegrams,
The slave mode (Mode 0) is used to read and evaluate the bus data
synchronous
transfer in a drive ring, for e.g. monitoring and diagnostic purposes.
With each received SYNC telegram, the SIMOLINK module initiates that
the configured interrupt task Ix is processed. If it is used as the receive
section for fast data transfer between SL master and slave, all of the
telegrams can be read and processed. Furthermore, it is possible to write
a max. 8 telegrams, in order to, for example, transfer signals to the SL
master.
SYNC telegram
SIMOLINK cycle
Processing time of the
SIMOLINK blocks
Fig. 4-9
Slave mode (Mode 0)
Coupling two
In order to send data between two automation systems via SIMOLINK,
which exceeds the amount of data using 8 telegrams, two independent
automation
SIMOLINK rings are required. This means that every node can be
systems
configured once as SL master to send in one ring and as slave to receive
in the other ring. This technique is used, for example, to achieve
Application Module FM 458 - User Manual
6DD1904-0AE0
Edition 12.2001
SIMOLINK cycle
Processing time of the
SIMOLINK blocks
Timer interrupt
SIMOLINK cycle
Processing time of the
SIMOLINK blocks
SYNC telegram
Processing time of the
SIMOLINK blocks
Interrupt task Ix
SIMOLINK cycle
SIMOLINK cycle
SYNC telegram
SIMOLINK cycle
Processing time of the
SIMOLINK blocks
Configuring
4-19
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