Cyclic Server Trigger For Variable Monitors - Siemens SINUMERIK 840Di sl Function Manual

3 Setting up functions
3.4 Fault services
Notice
If several limit values are monitored in one monitor, triggering is not possible for
each individual limit violation. In this case, only the first limit violation results in a
trigger.

3.4.14 Cyclic server trigger for variable monitors

Description of functions
A server trigger can be used to initiate all actions that are available (with the
exception of fault help requests from an ePS Network Services Internet PC).
Server triggers initiate actions on the basis of limits or intervals that have been
reached/exceeded (which can be configured for PLC and NC variables), when
these have been read cyclically from the control defined as a ePS Network
Services counter. (Endless counters in ePS Network Services cannot be reset,
even if the variable has been reset.)
Cyclic trigger on NC variable
Since the NC variables are processed as "endless counters" in the NC, and are
also accepted by ePS Network Services as this, the values read in a different
control monitor action can be configured here in such a way that the trigger initiates
when a configured interval value is reached or exceeded.
Notice
Cyclic triggers for NC variable data can only be created as a template if an axis
configuration is available.
Since the endless counter function of the NC cannot be guaranteed when
components are exchanged, when a smaller new value is read, ePS Network
Services calculates this as an offset to the old value.
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ePS Network Services, Function Manual (FH) - Release 12/2008
12/2008