User Manual

AR 400 Reader User’s Manual  2003-2004 Matrics, Inc. 51
During the operation of the system, if a device becomes non-operational, the system will disable it
automatically, but allow the rest of the system to continue to operate. If this happens, a SNMP trap is
generated, the appropriate device or devices are marked as system-disabled, child devices are marked
as parent-disabled, and a non-zero entry (link) displays in the System Disabled column.
For devices with multiple read points (such as a shelf), a read point can become non-operational (its
status changing to “degraded”) while its other read points continue to operate. An additional value
displays in the Enabled column for a degraded device. For example, if four read points were enabled
and one of them became degraded, “4/1” would display in the Enabled column. The “1” links to a list
of degraded devices, allowing you to enable degraded devices like you would a system-disabled
device.
3. To attempt to re-enable a system-disabled device, click the link in the System Disabled column, and
the associated Enable Device page displays. Select a device to enable and then click Enable Device,
or click Enable All Devices to attempt to enable all devices. If the device(s) is successfully brought
back into service, it will automatically enable all of the parent-disabled children, and it will be
removed from the Disabled lists.
4. If you want to automatically attempt to re-enable degraded or system-disabled devices after a
specified number of minutes, type the number of minutes in the Automatic Enable Period field on
the Reader Status page, and then click Set Auto Enable Period.
5. Information displayed in the System Clock field tells you the time on the Reader. When tags are seen
and/or events are generated, they are time-stamped with this time value. To change the time, click the
link. The System Time Management page displays. Select the appropriate values from the Year,
Month, Day, Hour, Minute, and Second drop-down list boxes, and then click Set Date and Time.
6. Information displayed in the System Up Time field tells you how long it has been running since the
system was last rebooted. The System Up Time field value is reset automatically each time the
Reader is rebooted.