4 Start-up X-AI 32 02
Page 34 of 60 HI 801 055 E Rev. 4.00
4.3 Sequence of Events Recording (SOE)
The event recording function is supported for all analog module inputs. Inputs to be
monitored are configured using the programming tool 'SILworX', see the online help and the
Communication Manual (HI 801 101 E).
During each cycle (2 ms), the I/O module reads the values measured for the analog inputs
and records the events that are stored in the volatile I/O event buffer.
An event is composed of:
Event Description
Event ID The event ID is assigned by the PADT.
Timestamp Date (e.g., 2009-11-21)
Time (e.g., 9:31:57.531)
Event state LL, L, N, H or HH
Event quality Quality good/
Quality bad, see www.opcfoundation.org
Table 21: Event Description
The processor module reads the events from the I/O event buffer cyclically and stores them
in its nonvolatile memory. Events stored in the I/O event buffer can be overwritten with new
events read by the processor module.
If the I/O event buffer is full, the I/O module creates an overflow system event entry in the
nonvolatile memory of the processor module. Thereafter, events are no longer recorded
until existing events have been read and space is once again available in the memory
buffer.
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