|
Read |
Read Multiple |
Write |
|
|---|---|---|---|
|
Current Value |
Yes |
Yes |
No |
|
Historical Value |
Ye |
No |
Yes |
|
Historical Data Changes |
Yes |
Yes |
No |
|
Aggregate Values |
Yes |
No |
Yes |
|
Subscribe to Changes |
No |
No |
N/A |
All of the tags from IP_AnalogDef, IP_AnalogDblDef, IP_DiscreteDef, and IP_TextDef are available through the interface.
Extra tag tables can be configured with the following configuration options:
-
Extra Analog Tables - The default behavior reads analog values from IP_AnalogDef and IP_AnalogDblDef. This is a comma-separated list of extra tables to add to the analog value queries.
-
Extra Discrete Tables - The default behavior reads discrete values from IP_DiscreteDef. This is a comma-separated list of extra tables to check for discrete tags.
-
Extra Text Tables - The default behavior reads text values from IP_TextDef. This is a comma-separated list of extra tables to check for text tags.