Horner APG QX751 OCS - Manual (Page 57)

MAN0890-02-EN CH. 10
August 20, 2009 Page 57 of 96 ECN # 979
The currently selected entry is indicated by a yellow highlight which can be moved up or down by
touching the arrow buttons or by directly touching an entry. If more entries exist than can fit on the page,
a scroll bar is displayed on the right side that also indicates the current relative position.
The current state of the displayed alarm is indicated by its color and optionally by an abbreviated indicator
after the date/time stamp (ALM, ACK, RTN). The operator can acknowledge an alarm by selecting it
from the list and touching the ACK button. The operator can also clear an alarm if that function is enabled
in the alarm object. If not enabled, the Clear buttons are grayed and do not respond to touch. Once view
operations are complete, simply touch the Esc button to remove the pop-up alarm viewer.
Note that OCS registers %SR181 and %SR182 are available for ladder use, which indicate presence of
unacknowledged or acknowledged alarm (respectively). The screen designer may implement these
registers to switch screens or active the beeper to attract the operator’s attention.
10.8
Removable Media (Compact Flash)
The removable media object is generally used inform the operator on the current state of the removable
media device and allow access to its file structure. The removable media object is displayed as a button
that changes colors to indicate the current state of the removable media device. The following indicates
the device states and the default colors associated with these states.
• Highest (Red)
- Device Error
• -
(Yellow) - Device Full (threshold adjustable)
• Lowest (Green) - Device OK
Figure 10.7 – Removable Media Object
To view and perform file operations, the operator must access the removable viewer. This is
accomplished by either touching an (enabled) removable media object or through the system menu.
When accessed, the removable media viewer is displayed as pop-up removable media dialog similar to
that shown in Figure 10.8.
Note that the removable media object can be configured to open the removable media viewer at a certain
directory complete with restrictions on transversing back up the file path. This may be used to restrict
operator access to non-critical files.