Omron FQM1-MMA21 User Manual

• Starting instruction: ACC(888) (continuous or independent), deceleration, absolute 

circular

The examples in this section demonstrate the functions with high-speed
counter 1 only. When using high-speed counter 2, replace the Auxiliary Area
addresses with the appropriate addresses for high-speed counter 2.

Either of the following types of pulse input signals can be input to the unit:

• Pulse trains from normal incremental encoders, etc.

• Encoder output data (e.g., OMRON's W Series) of Servo Drivers compat-

ible with absolute encoders (multi-turns absolute encoders)

The following explains the functions that are compatible with the latter, Servo
Drivers compatible with absolute encoders.

Refer to 7-5 Pulse Inputs for details on pulse train inputs from devices such as
normal incremental encoders

To input the encoder output data from a Servo Driver compatible with an
absolute encoder, the SEN output signal from the Motion Control Module has
to be connected to the Servo Driver. When starting an operation, the number
of multi-turns (to phase A as serial data) and the initial incremental pulse (to
phase A/B as pulse) are input once as the absolute position information.

After that, the position data during operations are input with the phase differ-
ential input (using normal counter functions).

Using a Servo Driver compatible with an absolute encoder enables the con-
trolled operation to be started from the position at turning on the power with-
out performing any origin searches.

Absolute cir-
cular

CW output

No

Yes

No

No

CCW output

No

No

No

Yes

FQM1-MMP21

Motion Control Module for Pulse I/O

FQM1-MMA21

Motion Control Module for Analog I/O