Independent Mode - Omron SYSMAC CJ Series User Manual

8 Pulse Outputs
Switching from Speed Control (Continuous Mode) to Positioning

(Independent Mode)

Example
Frequency changes
application
Change
from speed
control to
Pulse frequency
fixed dis-
Target
tance posi-
frequency
tioning
during
operation
ACC (continuous)
executed.
Fixed dis-
Pulse frequency
tance feed
Present
interrupt
frequency
ACC (continuous)
executed.
Execution of PLS2 with the following settings
Number of pulses = number of pulses until stop
Relative pulse specification
Target frequency = present frequency
Acceleration rate = Not 0
Deceleration rate = target deceleration rate
High-speed
interrupt
Pulse frequency
feeding
Target
frequency
Acceleration
rate
IFEED executed
* The starting frequency is ignored.
8-94
Outputs the number of pulses
specified in PLS2 (Both relative and
absolute pulse specification can be
used.)
Time
PLS2 instruction executed.
Time
Interrupt input occurs.
Specified number
of pulses
Deceleration
Speed
Position
rate
control
control
Time
Function
The PLS2(887) instruc-
tion can be executed dur-
ing a speed control
operation started with
ACC(888) to change to
positioning operation.
When an interrupt input
occurs during speed con-
trol for the IFEED(892)
instruction, operation
changes to positioning. An
interrupt task is not used.
There is no delay for the
starting time of the inter-
rupt task, improving the
feeding accuracy.
CJ2M CPU Unit Pulse I/O Module User's Manual
Procedure
Instructions Settings
ACC (Con- • Port
tinuous)
• Acceleration
↓
rate
• Deceleration
PLS2
rate
• Target fre-
quency*
• Number of
pulses
IFEED • Port
• Acceleration
rate
• Target fre-
quency
• Pulse output
set value
• Deceleration
rate