KEYENCE LS-7000 - Manual (Page 102)

4-50
Chapter 4 Function Settings
4
Tolerance (LIMIT) Settings
The LS-7000 Series judges whether or not the measured values pass the criteria. The
range of values used for judgment is called a tolerance. Tolerances can be set to OUT1
and OUT2 respectively.
Types of Limits
The following tolerance settings are possible.
• Reference value
Set the reference value and its upper and lower limits as deviation values. Measured
values can be compared to three levels (i.e., HI, GO, and LO). Use this mode if the
workpiece size changes but the deviations (tolerances) do not change.
• Threshold
Specify the upper and lower limits in absolute values. Measured values can be com-
pared to five levels (HH, HI, GO, LO, and LL).
Limit Range
The following ranges are used for the limits.
■ Reference Value
HI output range: (Reference value + Upper limit) < Measured value
GO output range: (Reference value + Lower limit) <
= Measured value
<
= (Reference value
+ Upper limit)
LO output range: Measured value < (Reference value + Lower limit)
Possible Setting Conditions
A possible set value must be within a range where the following two items can be set.
Reference value + Upper limit value
Reference value + Lower limit value
In addition, the following condition must be satisfied.
Reference value + Upper limit value > Reference value + Lower limit value
Tips Refer to Units, Default Minimum Values, and Setting Ranges on page 4-60 for
possible setting ranges in detail.
■ Threshold
HH output range: HH set value < Measured value
HI output range: HI set value < Measured value <
= HH set value
GO output range: LO set value <
= Measured value
<
= HI set value
LO output range: LL set value < = Measured value < LO set value
LL output range: Measured value < LL set value
Possible Setting Conditions
HH set value > HI set value > LO set value > LL set value
Tips Refer to Units, Default Minimum Values, and Setting Ranges on page 4-60 for
possible setting ranges in detail.
Note: If the input conditions are not satisfied, “Error-5” will appear on the main
display. Reset the error status by pressing the
ENT
key or ESC key and make
the settings again.