LC4H/-L

Operation modes

1. Input mode

For the input mode, you can choose one of the following five modes

• Addition

• Subtraction

• Directive

• Independent

• Phase

PHASE

IND

DIR

DOWN

UP

Input mode

Addition

UP

Subtraction

DOWN

Directive

DIR

Independent

IND

Phase

PHASE

Operation

*Minimum input signal width 30 Hz: 16.7 ms; 5 kHz: 0.1 ms

IN1 or IN2 works as an input block

(gate) for the other input.

• Example where IN1 is the count counting and IN2 is the input block (gate).

• Example where IN2 is the counting input and IN1 is the input block (gate).

* “A” must be more than the minimum input signal width.

* “A” must be more than the minimum input signal width.

* “B” must be more than the minimum input signal width.

* IN1 and IN2 are completely independent, so there is no restriction on signal

timing.

IN1 is the counting input and IN2 is the

addition or subtraction directive input.

IN2 adds at L level and subtracts at H

level.

IN1 is addition input and IN2 is subtrac-

tion input.

Addition when the IN1 phase advances

beyond IN2, and subtraction when the

IN2 phase advances beyond IN1.

01

2

3

n-3

n-2

n-1

n

n

n-1

n-2

n-3

3

2

1

0

H

L

H

L

IN1

IN2

Counting (subtraction)

Counting (addition)

Blocked

AA

A A

Reset

Count-up completed

AA

A A

n

n-1

n-2

n-4

n-3

0

1

01

2

4

3n

n-1

H

L

H

L

IN1

IN2

Counting (subtraction)

Counting (addition)

Blocked

Blocked

Reset

Count-up completed

H

L

H

L

Counting

IN1

IN2

Addition

Subtraction

Addition

AA

A A

01

2

3

4

3

2

1

01

2

3

4

Reset

Counting

IN1

IN2

H

L

H

L

01

2

34

3

2

1

12

2

3

Reset

Counting

IN1

IN2

BB

0

01

2

1

2

3

Reset

H

L

H

L

Phase advance

Phase retard

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