Please ensure Javascript is enabled for purposes of website accessibility
Powered by Zoomin Software. For more details please contactZoomin

AVEVA™ Plant SCADA

Support for Version 7​.30

  • Last UpdatedAug 04, 2025
  • 1 minute read

Citect SCADA 7.30 introduced a Sequence of Events (SOE) page which displays historical events in a sequence of events (SOE) format. Each record represents a single change of an event. This page can be utilized to display time stamped event data including time quality.

There are two columns which can be used to display time quality on the Active Alarm and SOE pages:

  1. "TSQuality" column. This column displays a string representation of a synthesis of the time quality

    The column value can be one of the following:

    • Time Good,

    • Time Uncertain,

    • Clock Not Synchronized.

  2. "Quality" column. This column displays a numeric value of OPC quality flags: the low 8 bits represent the Quality, Substatus and Limit status according to the OPC specification; the high 8 bits represent time quality.

    Note that time quality is not displayed on the Active Alarm or SOE pages by default, the user will need to use one of the following options:

    • Modify [Format]Alarm and [Format]SOE ini parameters in order to display it.

    • Add these columns from "Add Columns" list on the page at run time and save the changes.

The user will have to include "TSQuality" and "Quality" column names in the list of columns in [Format]Alarm and [Format]SOE ini parameters.

For example:

[Format]Alarm = {Time, 101}{OnTime,101}{Tag,100}{Name,181}{TSQuality,100}{Quality, 50},

[Format]SOE = {Time, 101}{Message,250}{Source,100}{Name,181}{TSQuality,100}{Quality, 50}.

Related Links
TitleResults for “How to create a CRG?”Also Available in