03/12 EM-ABS-01 for ACU 51
7.8.2 SYNC telegram, generation
If synchronous PDO’s have been created on the system bus, the master must send
the SYNC telegram cyclically. If a frequency inverter has been defined as a system
bus master, the latter must generate the SYNC telegram. The interval for the SYNC
telegram of a frequency inverter defined as the system bus master is adjustable. The
SYNC telegram is a telegram without data.
The default identifier = 128 according to the Predefined Connection Set.
If a PC or PLC is used as a master, the identifier of the SYNC telegrams can be
adapted by parameterization on the frequency inverter.
The identifier of the SYNC telegram must be set identically in all clients on the system
bus.
The setting of the identifier of the SYNC telegram is done via parameter
SYNC-
Identifier
918.
Parameters Settings
No. Description Min. Max. Factory
setting
918 SYNC identifier 0 2047 0
The setting "0” results in identifier assignment according to the Predefined Connec-
tion Set.
Atten-
tion:
The identifier range 129...191 may not be used as the emergency tele-
grams can be found there.
The temporal cycle for the SYNCH telegram is set on a frequency inverter defined as
the system bus master via parameter
SYNC-Time 919.
Note:
A setting of 0 ms for the parameter
SYNC-Time 919 means "no SYNC
telegram”.
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