Se
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tion 3
SE
T
U
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Section 3
Setting Threshold Values
3-31
ZS-L
User’s Manual
Setting Threshold Values
Threshold values are set to determine the range for PASS judgments. Both HIGH and
LOW threshold values are set. There are three judgment outputs: HIGH, PASS and LOW.
• Hysteresis (hysteresis width) can also be set to threshold values. Set hysteresis when judgments are
unstable to prevent chattering.
Setting Judgment Output p.4-5
• When setting threshold values while still connected to an external device, set the Sensor Controller's
LD-OFF input to ON so that the output to the external device remains unchanged. Judgment outputs in
the TEACH mode are the same as in the RUN mode, i.e., HIGH, PASS, and LOW.
Before executing teaching, select which of the HIGH or LOW threshold values is to be set
on the threshold switch on the ZS-L Series Controllers.
TEACH Mode
Method
Details
TEACHING
(MENU key)
Performs measurement and uses the measurement results to set threshold values.
Teaching is useful when threshold samples, i.e., with the upper and lower limits, can be
obtained beforehand.
Hold, trigger, and scaling settings that have been made before teaching are reflected in
the teaching measurements.
DIRECT IN
(L/R/UP/DOWN keys)
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
HIGH threshold value
Measured value
LOW threshold value
Out-
put
(ON when Measurement result
> HIGH threshold value)
(ON when LOW threshold value
≤
Measurement result
≤
HIGH threshold value)
(ON when Measurement result
< LOW threshold value)
Sensor Head
Sensor Head
Teaching point =
LOW threshold
value
Teaching point =
HIGH threshold
value
Threshold sample (lower limit)
Threshold sample (upper limit)
Содержание ZS-L -
Страница 1: ...USER S MANUAL Smart Sensor ZS L Series Ver 2 0 Cat No Z208 E1 02 ...
Страница 52: ...2 24 Section 2 INSTALLATION CONNECTION ZS L User s Manual Section 2 SmartMonitor ZS ...
Страница 90: ...3 38 Section 3 SETUP ZS L User s Manual Section 3 Setting the System Environment MEMO ...
Страница 156: ...6 46 Section 6 APPENDIX ZS L User s Manual Section 6 INDEX ...
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