Omron FQM1-CM001, FQM1-MMA21, FQM1-MMP21 Auxiliary Area, Word Bits Function Details Controlled

Functions for Servo Drivers Compatible with Absolute Encoders

Section 7-7

Tab page

Function

Details

Time when

setting

becomes

effective

Pulse input

Counter 1

Max. circular

When the counter operation is set to circular counter,

At power ON

value

this parameter sets the maximum value in the circu-

lar counter.

Setting range: 0000 0001 to FFFF FFFF hex

Absolute

0000 0001 to 0000 FFFF hex

encoder resolu-

Note Set the resolution considering the Servo

tion

Driver's encoder dividing rate and the Motion

(Number of input

Control Module's pulse input multiplier setting.

pulses per

Example:

encoder revolu-

Set the resolution to FA0 (4,000) when the Servo

tion)

Driver’s rate is 1,000 and the Motion Control Mod-

ule’s multiplier is ⋅4.

Counter 2

Max. circular

The counter 2 parameters have the same functions

value

as the parameters for counter 1, above.

Absolute

encoder resolu-

tion

(Number of input

pulses per

encoder revolu-

tion)

Counter 1

Absolute offset

Setting range: 8000 0000 to 7FFF FFFF hex

Always

This is the origin of the application when using an

absolute encoder.

Counter 2

Absolute offset

The counter 2 offset has the same function as the

counter 1 offset, above.

Auxiliary Area

Word

Bits

Function

Details

Controlled

by

A600

00 to 15

High-speed Counter 1 PV

Counter range: 8000 0000 to 7FFF FFFF hex

Motion Con-

(8 digits hexadecimal)

trol Module

A601

00 to 15

Note In Linear Counter Mode, high-speed

A602

00 to 15

High-speed Counter 2 PV

counter PVs are checked for overflow

A603

00 to 15

and underflow errors when the PVs are

read (at built-in I/O refresh for the Mod-

ule).

A604

00 to 15

High-speed

Counter

Absolute

Multi-turn data (PV read from encoder) input to

Motion Con-

and

Counter 1

operation

No. of

the Motion Control Module is stored here when

trol Module

A605

• Absolute

rotations

SEN signal is input to Servo Driver.

PV

linear

8000 0000 to 7FFF FFFF hex

(CW−)

(8-digit hexadecimal)

• Absolute

circular

• Absolute

linear

(CW+)

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