Some devices and protocols allow users to send time information along with variable values. I/O Drivers for such devices can also return clock information stored in each I/O Tag's TimeStamp property, with a resolution of one millisecond.

When a device does not support this type of information, or when a Driver is not prepared to handle it, this I/O Driver inserts the current date and time into this timestamp, using computer's clock. With this timestamp, Elipse E3 then uses this information both for checking and storing alarms, and also for generating historic files.

In case of I/O Block Elements, the same timestamp is informed for all I/O Block Elements, since they were all checked at the same time. If a Driver supports both I/O Block and I/O Tag variable readings, in case of I/O Block Elements representing distinct events, users must use I/O Tags.

For more information on which devices have this feature, please contact Driver's manufacturer. For more information on which Drivers or variable types inside devices use timestamps, please check Driver's help or contact Elipse Software's technical support.