KEYENCE LJ-V7000 Series User Manual
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LJ-V7000_COM_RM_E
9.2.9.6 Profile data amount calculation method
The amount of profile data to get with LJV7IF_GetProfile and other functions is a value multiplied by
a correction factor determined from the settings below with 800 as the base.
For example, the amount of profile data with the settings below is 300 (= 800 x 0.75 x 1.00 x 1.00 x
0.50) items of data.
Measurement range X direction: Middle
Binning: Off
Combine (wide): Off
Compression (X axis): 2
However, when the amount of profile data found as a result of the equation above is less than 200,
the profile compression (X axis) setting is adjusted so that the amount of profile data is 200 or
higher.
For example, in a situation like that below, the amount of profile data is 300.
Measurement range X direction: Middle
Binning: Off
Combine (wide): Off
Compression (X axis): 4
The specific calculation is described below.
1. 800 x 0.75 x 1.00 x 1.00 x 0.25 = 150
2. The result is less than 200, so the profile compression (X axis) setting is adjust to 2 instead of
4
3. 800 x 0.75 x 1.00 x 1.00 x 0.5 = 300
4. The result is 200 or higher, so the amount of profile data above is confirmed
9.2.9.7 Profile data storage order
In functions that get profile data, such as LJV7IF_GetProfile, the profile data stored in the area
between LJV7IF_PROFILE_HEADER and LJV7IF_PROFILE_FOOTER is 1 unit of profile data found
with "Profile data amount calculation method", and the data is stored in the order below.
• Storage order
1. 1st head profiles (when compression (time axis) is on, MAX profiles)
2. 1st head MIN profiles
3. 2nd head profiles (when compression (time axis) is on, MAX profiles)
4. 2nd head MIN profiles
• Notes
3 and 4 only exist when the number of heads is 2 and wide is off.
2 and 4 only exist when compression (time axis) is on.
Setting
Correction
factor
Comment
Category
Item
Setting
value
Imaging settings
Measurement range X
direction
Full
1.00
Initial value
Middle
0.75
Small
0.50
Binning
Off
1.00
Initial value
On
0.50
Profile settings
Combine (wide)
Off
1.00
Initial value
On
2.00
Compression (X axis)
Off
1.00
Initial value
2
0.50
4
0.25