23
CJ1-H and CJ1M CPU Unit Features Section 1-3
CW/CCW Pulse Outputs or Pulse + Direction Outputs
The pulse output mode can be set to match the motor driver's pulse input
specifications.
Automatic Direction Selection for Easy Positioning with Absolute
Coordinates
When operating in absolute coordinates (origin defined or PV changed with
the INI(880) instruction), the CW/CCW direction will be selected automatically
when the pulse output instruction is executed. (The CW/CCW direction is
selected by determining whether the number of pulses specified in the
instruction is greater than or less than the pulse output PV.)
Triangular Control
Triangular control (trapezoidal control without a constant-speed plateau) will
be performed during positioning executed by an ACC(888) instruction (inde-
pendent) or PLS2(887) instruction if the number of output pulses required for
acceleration/deceleration exceeds the specified target pulse Output Amount.
Previously, an error would have occurred under these conditions and the
instruction would not have been executed.
Change Target Position during Positioning (Multiple Start)
When positioning was started with a PULSE OUTPUT (PLS2(887)) instruc-
tion and the positioning operation is still in progress, another PLS2(887)
instruction can be executed to change the target position, target speed, accel-
eration rate, and deceleration rate.
Switch from Speed Control to Positioning (Fixed Distance Feed Interrupt)
A PLS2(887) instruction can be executed during a speed control operation to
change to positioning mode. This feature allows a fixed distance feed interrupt
(moving a specified amount) to be executed when specific conditions occur.
Change Target Speed and Acceleration/Deceleration Rate during
Acceleration or Deceleration
When trapezoidal acceleration/deceleration is being executed according to a
pulse output instruction (speed control or positioning), the target speed and
acceleration/deceleration rate can be changed during acceleration or deceler-
ation.
Use Variable Duty Ratio Pulse Outputs for Lighting, Power Control, Etc.
The PULSE WITH VARIABLE DUTY RATIO instruction (PWM(891)) can be
used to output variable duty ratio pulses from the CPU Unit's built-in outputs
for applications such as lighting and power control.
Origin Search Use a Single Instruction for Origin Search and Origin Return Operations
A precise origin search can be executed with one instruction that uses various
I/O signals, such as the Origin Proximity Input Signal, Origin Input Signal,
Positioning Completed Signal, and Error Counter Reset Output.
Also, an origin return operation can be performed to move directly to the
established origin.
Quick-response Inputs Receive Input Signals Shorter than the Cycle Time
With quick-response inputs, inputs to the CPU Unit's built-in inputs (4 inputs
max.) with an input signal width as short as 30
µs can be received reliably
regardless of the cycle time.
To Next Page
Loading...
