For diagnostics (read) and debugging (write) tags Monokot Server Administrator provides the Go Online mode. In the Go Online mode, the following additional tag information is available:
- Actual: contains the converted value of the tag
- Raw: contains the raw value of the tag (before conversion). If no value converter is set for the tag, the Actual and Raw fields are the same
- Status: contains the current tag status, e.g. Good, BadNoCommunication, BadLicenseExpired
- Update Time: contains the time (UTC) of the last tag update
- Access: contain access mode to tag
To read and write the tag values, the following requirements must be met:
- The user (specified in the credentials for connection) must have the required access rights
- The tag must exist on the server and have the required access rights
- The tag must be associated with a device and have an address
The Go Online mode does not use the OPC UA technology. Instead, it uses the server’s built-in mechanism of data access via HTTPS (Web API). You can read more about this here.