3 Setting up functions
08/2008
3.3 Fault services
© Siemens AG 2008 All Rights Reserved
3-110
ePS Network Services, Function Manual (FH) - Release 08/2008
Field Content
Type
Trigger start name
Displays the name specified in the
PLC variable configuration
DISPLAY
Trigger start condition Displays the condition specified in
the PLC variable configuration
DISPLAY
Trigger stop
If the logic conditions are fulfilled for
stop, monitoring stops. Independ-
ently, timeout times are also com-
pared so that the trigger can be trig-
gered.
The logic operations are created as
described for the PLC variables.
ACTION
Trigger stop name
Displays the name specified in the
PLC variable configuration
DISPLAY
Trigger stop condition Displays the condition specified in
the PLC variable configuration
DISPLAY
Monitoring time value The monitoring time is the threshold
acting as a trigger if the time is ex-
ceeded for a started process which
is not yet stopped..
For all units, up to 3-digit numerical
values can be specified. With days,
the limit is 366.
DISPLAY
INPUT
(Digits from
1 to -999)
Monitoring time unit
Available selection:
- Milliseconds
- seconds
- Minutes
- hours
- Days
DISPLAY
SELECTION
3.3.7 Combined machine trigger on "alarm group" AND "PLC variable"
Description of functions
The combined machine trigger contains the alarm group trigger and PLC variable
trigger, which are automatically linked by means of a logic "AND".
Its special feature is a configurable temporal indeterminacy between the alarm
group trigger and the trigger for the PLC variable, in which the trigger is yet to be
initiated. The individual trigger functions are described in the same way as each of
the triggers.