Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 375)

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The Resources
DMS 3.2 EN 02/2011 TD29 373
If the option Support DSP301,V3.01 and DSP306 is activated, then modular CAN
Slaves as well as some additional extensions concerning the standards DSP301 V3.01
and DSP306 will be supported. In this case e.g. the stroke of the Heartbeat will be
adjustable (Heartbeat Master [ms]:). Working with Heartbeats is an alternative
guarding mechanism: In contrast to the Nodeguarding functionality it can be
executed by Master- and Slave-Modules. Usually the master will be configured to send
heartbeats to the slaves.
Module Parameters of a CAN-Master
The module parameters dialog of a CAN master is the same as that for the other
modules: The parameters which have been additionally assigned to the master in the
configuration file, are displayed here and as a default the values can be edited.
Note!
Enter the name of the task which accesses the CAN bus as the 'Update task' name. If
several tasks access the CAN bus, enter the name of the task with the shortest cycle
time.