Keyence LS-3100/3100W Series User Manual Page 30

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3-step differentiation
Choose the 3-step differentiation first, then set the tolerance limits using
LIMIT. When "ON" appears on the display, the comparator output is sent
through each of the relays and open-collectors (HIGH, GO, or LOW).
See P.63, 64
Tolerance limit Condition Output
(Relay) (Open-collector)
HI < X HIGH HI1 (CH1)
HI
HI X LO GO GO (CH1)
LO
X < LO LOW LO1 (CH1)
Note: X represents a measured value.
7-step differentiation
Choose the 7-step differentiation first, then set the tolerance limits using
PRM. When "ON" appears on the display, the comparator output is sent
through each of the relays and open-collectors (HI3, HI2, HI1, GO, LO1,
LO2, or LO3).
See P.63
Tolerance limit Condition Output
(Relay) (Open-collector)
HI3 < X HIGH HI3 (CH1)
HI3
HI3 X > HI2 HIGH HI2 (CH1)
HI2
HI2 X > HI1 HIGH HI1 (CH1)
HI1
HI1 X LO1 GO GO (CH1)
LO1
LO1 > X LO2 LOW LO1 (CH1)
LO2
LO2 > X LO3 LOW LO2 (CH1)
LO3
LO3 > X LOW LO3 (CH1)
Note: X represents a measured value.
It is possible to set the tolerance limits for both 3-step and 7-step differen-
tiation. However, only the tolerance limits of the type of differentiation you
have selected are valid. Therefore, the comparator output is sent accord-
ing to these limits.
In 7-step differentiation, measured values can be correctly checked only
when the values assigned to the tolerance limits meet the following
condition: HI3>HI2>HI1>LO1>LO2>LO3
Tolerance Limits and
Comparator Output
CHAPTER 4 Functions and Controls
ls3100_15_29.p65 08.10.1, 10:54 AM24
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