- initial state (if the transaction has been created but DataPorter has never checked the condition whether the transaction can be executed)
- DataPorter at least once checked the condition whether the transaction can be executed; the other possibility is that the transaction has been executed but an error occurred afterwards
- the transaction has been executed successfully
Tag
- a tag has been created but it has not been added to the OPC server and has never been read
- quality is not good
- read operation is finished successfully, there is no problem with this item (tag)
- the last write or read operation failed, the item was not available in OPC server, or another error occurred
Group
- the group is not active
- there was a problem with some items(tags) that belong to that group
- there is no problem with this group
- the group cannot be added to the OPC server
Server
- the server is waiting to be connected
- the server is connected
- the server is disconnected
This documentation is designed to be used with CAS CommServer (this software is available at http://www.commsvr.com).