Siemens SINUMERIK 840D sl Function Manual page 180

3 Setting up functions
3.4 Fault Services
Function
Data type
Unit
Notice
Any trigger configuration can be configured for a PLC trace. With the trigger for a
PLC trace, please note that the triggering sequence of the trigger must always be
slower than the full recording duration of a trace including the pre-cycles.
This means that entire cycles * cycle time is the minimum duration until the same
PLC trace can be triggered again.
Depending on the length of the trace, the PLC requires additional cycles for the
data for the recorded trace to be retrieved.
If the next trigger is triggered for a trace before the data of the current trace has
been fully saved, the data cannot be recorded. Recording in parallel is not
possible. Should this occur, the history records that the data is missing for the
event.
If the next trigger is activated after the data for the last trace has been saved but
before all data items could be captured for the pretrigger, the oldest data are
missing in the pretrigger recording. All data items are always available from the
trigger time onwards, at the latest.
3-180
Description
All simple file types are supported.
Note:
The addresses can be entered in German and
English notation. For example:
E1.1 or I1.1
Unit of the variables to be recorded.
SINUMERIK Integrate AMB, AMC, AMM, Function Manual (FH) - 03/2013
Type
INPUT
DISPLAY
DISPLAY
© Siemens AG 2006-2013 All Rights Reserved
03/2013