Tolerance limits and comparator output – KEYENCE LS-3100/3100W Series User Manual

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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 ≥ X ≥ LO

GO (CH1)

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 (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

08.10.1, 10:54 AM