Omron ZW Series User Manual

Chapter 2 BASIC OPERATION
Chapter 2
Functions and Operations during Measurement
2-17
ZW
User’s Manual
Setting Threshold Value
Switch the controller to the FUN mode and set the range in order for the measured value
to be judged as PASS.
Both HIGH and LOW threshold values are set.
As a judgment result, HIGH, PASS or LOW is output.
A judgment result appears on the controller as follows:
• For judgment result HIGH: The HIGH indicator lights up.
• For judgment result PASS: The PASS indicator lights up.
• For judgment result LOW: The LOW indicator lights up.
There are two ways of setting the threshold value.
• Hysteresis (hysteresis width) can also be set to threshold values. Set hysteresis when measured val-
ues are dispersed around a threshold value, and judgments are unstable, to prevent chattering.
Settings for Judgment Output p.4-18
• Threshold values can also be adjusted by directly entering values in the RUN mode. This helps you to
make fine adjustments without shutting down the system.
Threshold values change p.2-13
Method Operating key Details
Teaching Performs measurement and uses the measurement results to set threshold
values.
Position teaching is useful when threshold samples, i.e., with the upper and
lower limits, can be obtained beforehand.
Direct / /
/
The threshold values can be set by directly inputting numerical values.
Direct input is useful when you know the dimensions for an OK judgment or
when you want to fine-tune threshold values after teaching.
HIGH
ON
OFF
ON
OFF
ON
OFF
LOW
PASS
Measured value
LOW threshold value
HIGH threshold value
Output
ON when Measurement result
> HIGH threshold value
ON when LOW threshold value
< Measurement result
< HIGH threshold value
ON when Measurement result
<LOW threshold value
RUN
RUN
FUN
FUN
TEACH
TEACH
L

Omron ZW Series Specifications

General

Brand	Omron
Model	ZW Series
Category	Accessories
Language	English