8
List of Functions by Purpose Section 1-5
1-5 List of Functions by Purpose
Self-diagnostic functions Watchdog, flash memory check, memory corruption check
Error detection functions Overtravel, Servo Drive alarm detection, CPU error, MECHA-
TROLINK communications error, Unit setting error
Purpose Category Name Basic function Details
Establishing the
mechanical origin of
the machine
Origin determination
Origin search The motor is operated to estab-
lished the origin.
8-2 Origin Search
Operation
Present position preset The position where the motor is
stopped is set to a specified position to establish the origin.
8-3 Present Position
Preset
Origin return The axis is returned to the estab-
lished origin.
8-4 Origin Return
Absolute encoder origin The origin is established using a
Servomotor with an absolute
encoder, so origin searches are
not required at machine startup.
8-6 Absolute
Encoder Origin
Point-to-point (PTP)
positioning
Position control
Direct operation (absolute movement or relative
movement)
The position and speed are specified to perform positioning using
an absolute or relative movement.
9-4 Using Direct
Operation
Changing the target
position and speed
as required during
positioning
Direct operation:
Changing target position
or changing target speed
The target position or target
speed is changed during positioning with direct operation.
9-4-3 Changing Target Position
9-4-4 Changing Target Speed
Performing positioning for a specified
distance from an
external input point
during positioning
Interrupt feeding When an interrupt input signal
turns ON during positioning with
direct operation, operation
switches to positioning for a fixed
amount.
9-5 Interrupt Feeding
Performing manual
feeding for adjustment or other purpose
Jogging The axis is moved at a fixed
speed in the forward rotation or
reverse rotation direction.
10-2 Jogging
Reducing shock
while device is operating
Auxiliary
functions
Acceleration/deceleration curves
Acceleration/deceleration is performed according to the basic
trapezoidal curve (linear acceleration/deceleration), an exponential
curve, or an S-curve, which
greatly helps to reduce mechanical vibration.
7-4 Acceleration and
Deceleration Operations
Temporarily multiplying the machine's
operating speed by a
constant ratio to perform startup adjustments
Overrides The axis command speed is mul-
tiplied by a constant ratio.
10-3 Override
Restricting output
torque during control operations such
as pushing control
Torque limit A constant limit is applied to the
output torque of the Servomotor
during positioning.
10-4 Torque Limits
Stopping the device
during operation
Stop function
Deceleration stop or
emergency stop
The moving axis is decelerated to
a stop or the axis is moved for the
number of pulses remaining in the
deviation counter and then
stopped.
10-9 Stop Functions
Changing the Servo
Drive settings from
the PLC
Data transfer
function
Reading/writing Servo
parameters
Servo Drive parameters are read
or written from the CPU Unit.
5-3 Transferring
Servo Parameters
Item Specification