Access to events

Some of the IO‑Link sensors forward events that occur to the master. These events may be items of information, warnings or error messages, e.g. short circuit or overheating.
The IO‑Link master reports these events by setting the "Device Diag" bit. Further information on the events can be read via the CoE directory or the "Diag History" tab.

Fig.39: Diag History tab

The events are arranged according to type (information, warning, error), flag, occurrence of the event (time stamp) and message (port number and event code).
The meaning of the individual messages can be taken from the vendor documentation. The IO‑Link device can be directly allocated on the basis of the port number. The events occurring can be managed using the various buttons.

• Update History: if the "Auto Update" field is not selected, then the current events can be displayed via the "Update History" button
• Auto Update: if this field is selected, then the list of events occurring is automatically updated
• Only new Messages: if this field is selected, then only those messages that have not yet been confirmed are displayed.
• Ack. Messages: an event that occurs is reported via the “Device Diag”. Confirming the message will reset the bit to 0.
• Export Diag History: the events that have occurred can be exported as a "txt" file and thus archived.
• Advanced: this field currently (as at 3^rd quarter 2015) has no function.