Omron FQM1-CM001 User Manual

A speed control pattern can be repeated in continuous speed control to con-
trol a series of repetitive operations at specific positions. For example, the fol-
lowing diagram shows an axis that repeatedly switches to low-speed
operation at one position and switches to high-speed operation at another
position. Since the speed control pattern must repeat in these applications, a
counter cannot be used if it is reversible. 

Bit patterns can be output internally in the Auxiliary Area when the pulse out-
put PV is within a specified range. 

The processing of the range-comparison bit pattern outputs for pulse output
PVs is the same as the processing for high-speed counter PVs, so refer to
Checking for High-speed Counter Interrupts under High-speed Counter Func-
tion Description in 7-5-8 Pulse Input Function Description for details.

The acceleration/deceleration rate’s speed-change cycle can be set to either
1 ms or 2 ms for the ACC(888) and PLS2(887) instructions. The same
speed-change cycle setting applies to both pulse output 1 and 2 and both the
ACC(888) and PLS2(887) instructions.

0

 

 

High-speed 
region

Low-speed 
region

Single-rotation speed control pattern

Pulse output PV

Speed

(frequency)

Target value 1

Target value 2

Time

Time

High-speed 
region

Low-speed 
region

Controlled by
ACC instruction.