ProSoft Technology PTQ-AFC - Manual (Page 118)

Quick Start PTQ-AFC ♦ Modicon Quantum Platform
User Manual Liquid and Gas Flow Computer for Hydrocarbon Products
Page 118 of 259 ProSoft Technology, Inc.
June 23, 2011
6.12.6 Loggable events
The tables below give full details of all events that are recorded in the Event Log.
For the Special events (page 118), columns are:
Tag Numeric value that identifies the event.
Rkv Effect on archives and accumulator resets (see next).
Description Lists:
The event name, identifying its triggering condition.
Contents and meaning of the old and new value fields.
Relevant additional information.
For the Datum Point (page 121, page 119, page 124) events, columns are:
Grup Group code.
Sbgp
Subgroup code.
Item
Item code.
Dtyp Datum type code (mnemonic).
Rkv Effect on archives and accumulator resets (see next).
Datum point The corresponding writable Modbus point.
In these tables, the "Rkv" columns specify how archives and accumulator resets
are scheduled upon occurrence of the corresponding loggable events.
Column values are:
Value Meaning
* Upon this event archives and resets are scheduled according to the
configured "event" Archive Options, provided that the applicable
meter(s) is(are) enabled. Applicable meters depend upon the event
class:
(a) Special (non-meter-specific) and Site Datum Point events:
All meters.
(b) Meter events (including meter-specific Specials):
The addressed meter.
(c) Stream events:
The addressed meter, provided that the addressed stream is active.
Scheduled archives are always written before completing any change to
data or module state implied by the event; this ensures that the data
contributing to an archive is limited to that which was available before
the event.
- This event has no effect on archives and resets.
(n)
Upon this event archives and resets are scheduled as for "*", modified
by the conditions and actions given in "Note (n)" in "Rkv" notes (page
125).
6.12.7 Special events
Tag Rkv Description
0 - Never Used
Value: Always 0.
Notes: This entry in the Event Log has never been written.
The number of such entries starts at 1999 upon cold start and
decreases as events are written until none remain, after which oldest
events are overwritten with new ones.