KB-32913: Recording data with PLC timestamp.
Question: How can I set up a Historic’s E3TimeStamp field to record the date/time from PLC and not from the PC? Solution: To do so, just access the Historic’s settings…
Category: Historic
KB-32972: Recording data only when tag’s value is 1.
Question: How can I have some tags recorded in a database only when another’s I/O tag value turns 1? Solution: To do so, follow these procedures: Create a Historic with…
KB-32244: Importing historic fields.
Question: Can I import Historic fields via a *.csv file? Solution: No*, you can’t. What can be done in this situation is to link the Historic to a pre-existing data…
KB-24422: Changing a table name at run time.
Question: How can I change a Historic’s recording table name at run time? Solution: To do so, you must disable the Historic, change its TableName property to the desired new…
KB-29076: Sequence of Events (SOE).
Question: How can I perform a Sequence of Events (SOE) in E3? Solution: This can be done in two ways: via alarms settings, or via I/O Driver’s OnTagRead event. How…
KB-24714: Number of fields in a Historic.
Question: What is the maximum amount of fields a Historic can have in an E3 application? Solution: It will depend on your database. SQL Server accepts up to 1024 columns…
KB-13330: Setting a Historic to only record data per event.
Question: How can I set a historic to record data in the database only when there is an event, and not automatically/by scan? Solution: To do so, go to Historic…