Operating instructions

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4.14 Utilities
For the plannin
g
of the system bus accordin
g
to the drive tasks in question, there are
utilities in the form of tables.
The planning of the system bus is done in three steps:
1. Definition of the communication relationships
2. Production of the virtual links
3. Capacity check
The priority assignment of the identifiers is relevant for the definition of the communi-
cation relationships. Data that are to be transmitted with a higher priority must be
given low identifiers. This results in the message with the higher priority being trans-
mitted first with a simultaneous access of two nodes to the bus.
Note:
T
he recommended identifier ran
g
e for the communication relationships via
the PDO channels is 385 ... 1407.
The identifiers below 385 are used for the NMT telegrams (boot-up se-
quence, SYNC telegram) and emergency message.
The identifiers above 1407 are used for the SDO channel for parameteri-
zation.