08/2008
3 Setting up functions
3.3 Fault services
© Siemens AG 2008 All Rights Reserved
ePS Network Services, Function Manual (FH) - Release 08/2008
3-121
3.3.13 Cyclic server trigger for NC monitors and variable monitors
Server trigger
A server trigger can be used to initiate all actions that are available (with the excep-
tion 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 Ser-
vices counter. (Endless counters in ePS Network Services cannot be reset, even if
the variable has been reset.)
Cyclic trigger on NC monitor
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 con-
trol 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 monitor 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 com-
ponents are exchanged, when a smaller new value is read, ePS Network Ser-
vices calculates this as an offset to the old value.
Fig. 3-27: Selection: NC monitor counter