Besides the "DD-MMM-YYYY H:M:S", e.g., "12-Oct-2006 03:37:06", date/time entries, common English time references can be used, such as "now", "-30minutes", "30minutesago", "-12hours", "12hoursago", "-2days", "2daysago", etc. For more details of possible date/time formats see: http://us2.php.net/strtotime
To display the most recent actuator data, set the "Time of Display" to "now". When the "TIme of Display" is "now", if the most recent MySQL data for the actuators is less than 120 seconds old, the background of the upper title cell will be green. If the data is more than 120 seconds old, the background will be red, indicating that the data is stale.
If the "Time of Display" is any value besides "now", the background for the title is skyblue.
After you have chosen a "Time of Display", you can either click the "Display It!" button or press the enter key when the cursor is in the "Time of Display" text box.
Data displayed here is obtained from the MySQL background logs table for the cell actuators. This table has a new entry inserted every 60 seconds. Data is inserted into the MySQL table only when the cell crate is on.
The actuator number can be determined by moving the mouse over a cell. The actuator number will appear as a tooltip.
If two numbers are present in a table cell, the number represent "Force1" and "Mon1", respectively. These are the commanded force (in lbs) and the corresponding current load cell monitor value (in lbs). Force1 is applied in the "Z" direction, parallel to the optical axis of the telescope. Actuators with only two numbers are "single" actuators
If four numbers are present in a table cell, the upper two numbers are "Force1" and "Mon1" as just described. The lower two numbers are "Force2" and "Mon2", respectively. These latter numbers represent the command force (in lbs) and the corresponding load cell monitor value (in lbs) in the "Y" direction, parallel to the direction of gravity. Actuators with four numbers are "dual" actuators.
If the difference between the commanded force ("Force1" or "Force2") and corresponding monitor value ("Mon1" or "Mon2") is greater than 10 lbs, the background of the cell is yellow. If the difference between these values is greater than 25 lbs, the background is red. Otherwise, the background is green.
The telescope altitude is shown in the title cell. When the telescope is zenith pointing, all of the weight of the primary mirror is supported by the "Force1" forces. As the telescope tilts towards horizons, the weight is transferred from the "Force1" forces onto the "Force2" forces of the dual actuators. At horizon pointing, all of the weight of the mirror is supported by the "Force2" forces on the dual acutators.
Cell crate status is also shown in the title area. See the cell crate documentation for a description of these status variables.
The time for the three data sources for this display are shown by hovering the mouse over the title area. The actuator time is the time for most recent actuator data. The status time is the time of the most recent cell crate status data. And, the mount time is the time of the most recent mount altitude data. You may need the "long titles" plugin if you are using Firefox, Mozilla, or Netscape: https://addons.mozilla.org/firefox/1715/
