Communications configuring
System- and communication configuring D7-SYS - SIMADYN D 3-171
Edition 12.2003
3.17.4.2 SIMOLINK function blocks
The configuring engineer can use the following function blocks:
• @SL SIMOLINK central block
• SLAV SIMOLINK receive block, one for each actual value
• SLSV SIMOLINK send block, one for each setpoint
• SLSV2 SIMOLINK send block, for two setpoints
• SLSVAV SIMOLINK send and receive block for up to 8 setpoints
and actual values of the slave
• SLD SIMOLINK delta evaluation
• SLDIS SIMOLINK dispatcher
The central block @SL permits the initialization and monitoring of
communications in a SIMOLINK ring.
It may only be configured once for each SIMOLINK ring in a sampled
cyclic task (T4 or T5) which is, as a minimum, 4x longer than the send
and receive block.
If a transceiver no longer receives a telegram as a result of an
interruption, then it automatically sends a special telegram, which
evaluates the @SL function block. The address of the node is output at
NDM, which first signals the fault.
NOTE
Additional information regarding the mode of operation and the
connections (I/O) of the specified blocks are provided in the online help
of the CFC Editor and in the "Function block library" reference Manual".
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