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
3-109
Notice
The logical evaluation whether the timeout value is exceeded, is time-delayed by
the system. This must be taken into account if actions that can only capture
realtime data are triggered by the timeout trigger. It is not possible to capture
precisely timed data from the cycle in which the timeout took place (max. delay in
the minute range).
Due to system dependencies, repeatability of the timeout function is also linked to
the communication runtimes which depend on the demands placed on the
interface between PLC and PC of the operator. As a rule, repetitions of less than
one second can be achived, with high interface demands it may however be a
few seconds.
Fig. 3-21: Timeout trigger
Field Content
Type
Name
Name of the trigger: If this is not
entered, the trigger is called Timeout
and assigned a consecutive number
in brackets.
DISPLAY
INPUT
(Max. 40 char-
acters; any
character per-
missible)
Trigger start
If the logic conditions are fulfilled for
start, monitoring starts for the speci-
fied time
The logic operations are created as
described for the PLC variables.
ACTION
