Citizen SA-SD Operation Manual page 24

Teaching method
This sets the HIGH and LOW
setting values automatically
using one reference work.
One-point teaching
This is used to judge work with
a ±tolerance.
[Initial status]
This sets the HIGH and LOW
setting values automatically
using two reference works.
Two-point teaching This is used to judge work
according to whether it falls
between an upper and lower
limit.
This sets the HIGH and LOW
setting values automatically using a
satisfactory work, HIGH defective
work, and LOW defective work.
It assumes the upper limit to be the
median of the satisfactory and
Three-point teaching
HIGH defective work values, and
the lower limit to be the median of
the satisfactory and LOW defective
work values. This type of teaching
is used to judge work according to
whether it falls between these
upper and lower limits.
Related information
■
The initial status of the tolerance setting for the one-point teaching is 0.1000 (±0.1).
For setting of the tolerance in the one-point teaching, refer to "6-1-5 Tolerance <±>."
The judgment results are displayed as shown in the following table.
Digital display MAIN (white)
Teaching cannot execute correctly in the following cases:
• Immediately after the power has been turned on, or immediately after input of a reset
• When the data is outside the display's upper or lower limit.
• While an alarm is being output
• While an error is being output
Setting
+Tolerance = −Tolerance
Description
For a stable measurement
For a measurement that is not stable
When teaching did not execute correctly
5- 4
HIGH setting value
+Tolerance
Setting value
−Tolerance
LOW setting value
HIGH setting
value
LOW setting
value
HIGH setting value
= (Setting value 1 + Setting value 2) / 2
LOW setting value
= (Setting value 2 + Setting value 3) / 2
Setting value 1
HIGH setting value
Setting value 2
LOW setting value
Setting value 3