Specify any optional XAXIS values after the XAXIS Mandatory Value in a TrendSpec definition. Remember to include a comma at the end of the mandatory value before listing any of these optional values. Include a comma between each optional value’s definition.
Many of the optional XAXIS values are equivalent to the properties that you can specify using the Edit X Axis window on a Pre-Configured Trend. For further information on these properties, see Configure the X-Axis.
The optional values that you can specify within the XAXIS section are:
|
XAXIS Optional Values |
||
|---|---|---|
|
Identifier |
Value Type |
Comments |
|
StartTime (Only applicable if the <X-Axis Mode> is set to Absolute.) |
DATE |
Use to specify the earliest time period that is to be shown on the x-axis when the ad hoc Trend is first displayed. Specify the time and date in this format: StartTime = %23dd/MM/yyyy HH:mm:ss.SSS%23
Example:
StartTime = %2321/11/2008 08:30:00.000%23 (Within a TrendSpec definition, a DATE value has to be enclosed within the code %23.) |
|
EndTime (Only applicable if the <X-Axis Mode> is set to Absolute.) |
DATE |
Use to specify the latest time period that is to be shown on the x-axis when the ad hoc Trend is first displayed. Specify the time and date in this format: StartTime = %23dd/MM/yyyy HH:mm:ss.SSS%23
Example:
EndTime = %2322/11/2008 08:30:00.000%23 (Within a TrendSpec definition, a DATE value has to be enclosed within the code %23.) |
|
Offset (Only applicable if the <X-Axis Mode> is set to RelativeNow or RelativeLatest.) |
String |
Use to specify the earliest time that is displayed on the x-axis, in relation to the current time. You need to Specify a Relative Time in the OPC Relative Time Format.
Example:
Offset = 'Hour - 3 Hours' (for the x-axis to display an interval that starts 3 hours before the start of the current hour) |
|
Interval (Only applicable if the <X-Axis Mode> is set to RelativeNow or RelativeLatest.) |
String |
Use to specify the amount of time that is displayed on the x-axis at one time. You need to Specify a Time Period in the OPC Time Format.
Example:
Interval = '1 Hour' or Interval = ‘1H’ Alsosee Use TrendSpec to Define a Multiple Trace Ad Hoc Trend. |
|
Format |
Identifier value |
Use to specify the time format used for the x-axis. Specify one of these values: TwelveHour, or TwentyFourHour.
Example:
Format = TwentyFourHour (If TwelveHour is specified, the time on the x-axis is appended with AM or PM, as applicable.) |
|
MinorTicks |
Integer |
Use to specify the number of minor tick indicators that are to appear between the major indicators on the x-axis. Enter a suitable value in the range 1 to 10 inclusive.
Example:
MinorTicks = 3 |
|
Position |
Identifier value |
Use to specify the position of the x-axis on the ad hoc Trend. Specify one of these values: Top, or Bottom.
Example:
Position = Bottom Alsosee Enable Users to Specify Which Traces to Include on an Ad Hoc Trend. |
|
Continuous |
Boolean |
Use to continuously scroll the x-axis when the time almost reaches the end of the time interval currently shown on the x-axis. In this mode, you can automatically follow the trend’s trace after it reaches the end of the current x-axis time interval. For more information, see Configure the X-Axis
Example:
Continuous = True |
| Jump | Boolean |
Use if you want the x-axis to show (jump to) the time interval after the time interval currently shown on the x-axis. It will do this when the time reaches the end of the current x-axis time interval. For more information, see Configure the X-Axis
Example:
Jump = True |
|
ShowGrid |
Boolean |
Use to specify whether vertical grid lines are shown for the major ticks on the x-axis.
Example:
ShowGrid = False (Use the YAXIS ShowGrid identifier to specify whether horizontal grid lines are displayed (see YAXIS Optional Values).) |
|
ShowNow |
Boolean |
Use to specify whether a vertical line that indicates the values for the current time (‘now’) is shown on the Trend.
Example:
ShowNow = False |
|
Colour |
RGB |
Use to specify the RGB color of the x-axis.
Example:
Colour = RGB(0,0,0) |