Server Trigger On "Variable Monitor Reaches Limit Value - Siemens SINUMERIK 840D sl Function Manual

3 Setting up functions
3.4 Fault services

3.4.16 Server trigger on "Variable monitor reaches limit value"

Function description
Any reaching or exceeding of the limit values defined in the variable monitor can be
configured here as a trigger in the control monitor.
In contrast to the interval-based evaluations, do not use an endless counter here. If
you do, a trigger can only be initiated once during the entire life cycle of the related
monitor. In this case, it is advisable to use the normal PLC variable, which can
fluctuate around a limit value so that this monitor can become active each time a
limit value is violated.
Since the variable monitor cannot generate an entry in the event history, this is
done via the control monitor to ensure that any limit value violations can be
documented.
The further functions of the control monitor, with workflow actions and diagnostics
actions, are fully available, in order to be able to interactively initiate actions in
response of limit value violations. Since the processed data is not updated
cyclically, the evaluation is done by reaching or exceeding the limit. In order not to
trigger an action at every triggering, edge evaluation can be selected. An event will
be generated only at the first trigger after the limit value violation.
Fig. 3-42: Trigger on limit value for variable monitor
Function
Name
3-156
Description
Name of the trigger
SINUMERIK Integrate AMB, AMC, AMM, Function Manual (FH) - 03/2013
© Siemens AG 2006-2013 All Rights Reserved
03/2013
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