Panasonic PV500 User Manual page 179

Setting Base Angle
Select a base angle from the following three types for detecting the angles of the maximum and minimum
values of radius, diameter or width. This setting affects the display of the lower horizontal axis of the graph that
is displayed on the setting window.
1.
Select "Virtual Circle Detect Condition" > "Base Angle".
2.
Select from "X Direction", "Rotation Adjustment Angle" or "Start Angle".
X Direction (Default):
Outputs an angle using the right side of X axis as 0 degree. An angle is expressed in -180 to +180.
It is not affected by the "Start Angle" specified in Area Setting or the adjustment angle in "Position
Adjustment".
The lower horizontal axis of the graph is indicated from the value that is Start angle + Adjustment angle.
Rotation Adjustment Angle:
Outputs an angle using Rotation adjustment angle as a base. An angle is expressed in -180 to +180.
The lower horizontal axis of the graph is indicated from Start angle.
Start Angle:
Detects an angle using "Start Angle" specified in the area as 0 degree. An angle is expressed in 0 to 360.
If the number for Position/Rotation Adjustment or Rotation Adjustment checker is specified for "Position
Adjustment" in Area Setting, the start angle after rotation adjustment is 0 degree.
Example) When Start angle is 45 degree and Adjustment angle is 30 degree, 75 degree is used as a base
angle as the start angle is located at the position of 75 degree.
The lower horizontal axis of the graph is always indicated from 0 degree.
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