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Legend Status Column |
The Legend Status column displays the current status of each Pen. The content of that message is formed by an error information, if available, and information about the current status of a Pen, such as the number of points. The next two tables show all possible error and information messages for Realtime- and Historic-type Pens. If a Pen's type is Historic and Realtime, then the final message is a combination of real time and historical parts. In case there are error messages, the column's row is displayed in red while that error persists.
Status messages for the real time part
Message |
Meaning |
---|---|
Error: Real time data disconnected |
There is no connection from Pen's real time part. Check Tag names in Pen's YLink and XLink properties |
Info: Real time n pts |
Displays the total number of points on the real time part |
Status messages for the historical part
Message |
Meaning |
---|---|
Info: Query Name waiting |
Waiting for query initialization. This means that some query's change or update request was detected |
Info: Query Name initializing |
This query is starting. At this time there is a validation of Pen fields |
Error: Query Name: Initialization fail |
Before loading query data, an E3Chart must have information about which fields are available on its query, to perform a link between these fields and the XField and YField properties. Thus, a failure occurred when retrieving these fields, which might be a network or SQL syntax error |
Error: Field not found (XField = 'Field Name') |
The field informed in the XField property was not found on this query. Check if this field is selected on query's edition screen or on the SQL code |
Error: Field not found (YField = 'Field Name') |
The field informed in the YField property was not found on the query. Check if this field is selected on query's edition screen or on the SQL code |
Error: 'Query Name' 'Error Message' |
Indicates that there is an error on this query, and data cannot be retrieved. Possible messages displayed in Error Message are described on the next table |
Info: n pts |
Displays the total number of points on the historical part |
Info: loading |
Indicates that query data is still loading from a server |
Error: Invalid query (QueryName = 'Query Name') |
The query indicated by Pen's QueryName property was not found by this E3Chart |
Specific messages for query failures
Message |
Meaning |
---|---|
Failed when adding data |
Cannot load data into memory |
Failure when creating query |
Cannot create a query |
Error when executing query |
Cannot execute a query |
Failure when retrieving data from server |
Cannot retrieve query results from a server |
Failure when retrieving number of records from server |
Cannot retrieve query's total number of existing records from a server |
Failure when positioning cursor at the beginning |
Cannot move cursor to the first query record |
Cursor is busy |
Query records are not available for retrieval from a server |
Failure when retrieving data from server |
Cannot retrieve query records from a server |
Unknown error |
There was an unexpected error when retrieving query data from a server |