Section IV. Monitor DisplaySwitches are displayed on the screen as white rectangles with labels inside. The size of switchdisplays can vary. The primary active switch information is alarm annunciation, which is discussed inparagraphs V.B and C. When a switch has been deactivated, or when the Input Board has failed, theswitch is displayed as the switch label with no borders. This format is to make it clear to the operatorthat this switch is not active, and will neither alarm nor show status.2.Status Switches (Fig. 7)The most commonly used switches are those that cause alarm annunciation, however the PMS II alsosupports switches which show status instead of alarm. This is done by bracketing one of the bottomlines of the switch with the same symbols as high/low setpoint markers to indicate the status.D.Alarm Summary PageThe Alarm Summary Page provides the operator with the capability of viewing all alarming points on a singlepage. Alarms are displayed with the label of the point on the left side of the page, and, if the alarming pointis a bargraph, the digital value on the right side of the page. Alarm status and digital information is updatedevery three seconds. Unacknowledged alarms appear first, and are displayed in double-intensity blinkingformat. Acknowledged alarms follow, and are displayed in normal intensity. Further, if alarm group priority isspecified, the alarms will be arranged in their respective alarm groups in descending priority, labeled with thegroup heading. The Alarm Summary Page will be displayed automatically whenever a new alarm isannunciated, or can be selected manually by the operator by pressing the Alarm Summary key on theOperator's Station keyboard. if there are too many alarms to be displayed on one page, pressing the AlarmSummary key again will display the next page of alarms, and so on until all the alarms have been displayed.Pressing the Alarm Summary key once more will return the display back to the first page.E.Auto-ScanThe PMS II provides for 'hands-off' scanning of all the pages that can be displayed on the Operator's Station.Scanning will automatically start after an interval of time has elapsed since the last page was manuallyselected. This time interval is usually set at 15 minutes. Optional manual capability to start Auto-Scan isindicated by the presence of a key labeled, 'AUTO-SCAN', on the keyboard. Pressing this key willimmediately place the Operator's Station into the Auto-Scan mode, and will also light the key as a modestatus indicator. Once in the Auto-Scan mode, the videoPMS II Operator's InstructionsPage 11
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