Specifying the start time for Process History View

Parameter: /starttime

The start time is treated differently for Event displays than it is for Charts and E+Charts.

In Event displays, specifying the start time results in the display of the most recent events, beginning at the specified time, and ending at the current time. The default display is the most recent hour if not otherwise defined. This parameter is not to be used with the time span parameters for Events. If you provide both a start time and a time span, the start time is ignored. The start time must be in the format specified in the Regional and Language Options dialog (available in the Control Panel).

For Charts and E+Charts, the default time range is 8 hours, ending at the current time. If creating a new Chart or E+Chart with the new parameter, use the starttime parameter to select a specific start time. If opening an existing file, you can use this parameter to change the configured value in the file. If using the Process History View application, this is the same as clicking Chart → Configure Chart, clicking the Time Scale tab, and entering the value in the Time Start field.

For Charts and E+Charts, you can use the starttime parameter with the other time specification parameters, span or endtime. The starttime parameter can be either of the two following types:

Same format as defined in the Date and Time tabs of the Regional and Language Options dialog (available in the Control Panel).
A valid Continuous Historian time format:
- Absolute: DD-MMM-YY hh:mm:ss
- Relative: +- D, h, m, s
- Valid code: SUNDAY, TODAY, JULY,
- Current time: *
- Combination of * or a Valid code with a relative offset: YESTERDAY+8h

Note

The keyword today means today's date at 00:00, and the keyword yesterday means yesterday's date at 00:00. Other keywords are the days of the week (Monday, Tuesday, Wednesday) and months of the year (January, February, March). You can also use a format such as Tuesday+14h to mean 2 PM of the most recent Tuesday. Since the time string can contain forward slashes (12/05/97 08:00:00 PM), enclose the string in double quotes or parentheses.

Type: Time specification

Applies to: Events, Chart, and E+Chart

Format: Same formats as the endtime parameter. There are two valid formats. For specifying the absolute start time, either use the format specified for the workstation (Start → Settings → Control Panel → Regional and Language Options) or Continuous Historian format.

Examples:

CHS /new events /starttime 10:00

CHS /new chart /starttime 10:00 /endtime 14:00

CHS /new E+Chart /starttime Monday+8h /span 12