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Functions Listed by Purpose
1-3-2
Controlling Pulse Outputs
Purpose
Perform simple posi-
tioning by outputting
pulses to a motor driver
that accepts pulse-train
inputs.
Perform origin search
and origin return opera-
tions.
Change the target posi-
tion during positioning.
(For example, perform
an emergency avoid
operation with the Multi-
ple Start feature.)
Change speed in steps
(polyline approxima-
tion) during speed con-
trol.
Change speed in steps
(polyline approxima-
tion) during positioning.
I/O used
Function
Built-in
Pulse out-
Pulse output functions
Outputs
puts 0 and
• Single-phase pulse
1
• Single-phase pulse
• Single-phase pulse
Built-in
Pulse out-
Origin functions (Origin
Outputs
puts 0 and
search and origin
1
return)
Built-in
Pulse out-
Positioning with the
Outputs
puts 0 and
PLS2(887) instruction
1
Built-in
Pulse out-
Use the ACC(888)
Outputs
puts 0 and
instruction (continuous)
1
to change the accelera-
tion rate or decelera-
tion rate.
Built-in
Pulse out-
Use the ACC(888)
Outputs
puts 0 and
instruction (indepen-
1
dent) or PLS2(887) to
change the acceleration
rate or deceleration
rate.
The built-in outputs (bits 00 to 03 of
CIO 2961) can be used as pulse outputs 0
and 1.
output without accel-
eration/deceleration
Target frequency: 0 Hz to 100 kHz
Controlled by SPED.
Duty ratio: 50%
The pulse output mode can be set to
output with accelera-
CW/CCW pulse control or Pulse plus direc-
tion/deceleration
tion control, but the same output mode must
(equal acceleration
be used for pulse outputs 0 and 1.
and deceleration
rates for trapezoidal
Note The PV for pulse output 0 is stored in
form)
Controlled by ACC.
output with trapezoi-
dal for (Supports a
startup frequency
and different acceler-
ation /deceleration
rates.)
Controlled by
PLS2(887).
Origin search and origin return operations
can be executed through pulse outputs.
• Origin search:
To start the origin search, set the PLC
Setup to enable the origin search opera-
tion, set the various origin search parame-
ters, and execute the ORIGIN SEARCH
instruction (ORG(889)). The Unit will
determine the location of the origin based
on the Origin Proximity Input Signal and
Origin Input Signal. The coordinates of the
pulse output's PV will automatically be set
as the absolute coordinates.
• Origin return:
To return to the predetermined origin, set
the various origin return parameters and
execute the ORIGIN SEARCH instruction
(ORG(889)).
When a positioning operation started with
the PULSE OUTPUT (PLS2(887)) instruction
is in progress, another PLS2(887) instruction
can be executed to change the target posi-
tion, target speed, acceleration rate, and
deceleration rate.
When a speed control operation started with
the ACC(888) instruction (continuous) is in
progress, another ACC(888) instruction
(continuous) can be executed to change the
acceleration rate or deceleration rate.
When a positioning operation started with
the ACC(888) instruction (independent) or
PLS2(887) instruction is in progress, another
ACC(888) (independent) or PLS2(887)
instruction can be executed to change the
acceleration rate or deceleration rate.
Section 1-3
Description
A276 and A277. The PV for pulse
output 1 is stored in A278 and A279.
7
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