Omron SYSMAC C500-NC222-E Operation Manual page 156

flag
gain
hunting
inching
incremental position
initial position
interpolation
interpolation code
interpolation end point
M code
NC contacts
NO contacts
op code
open-loop system
origin
origin compensation
origin proximity signal
origin proximity
output code
parameters
positioning action
present position
pulses
pulse rate
pulse train
semiclosed-loop system
servolock
152
Glossary
A bit that is turned ON and OFF automatically by the system to provide status
information.
The increase in signal power produced by an amplifier.
The tendency, in servosystems, to overcompensate when the system's
momentum carries it past the target position.
Manual feeding wherein positioning is executed one pulse at a time.
A position given in respect to the present position, rather than in respect to the
origin.
The present position when a start command is executed.
The mathematical calculation of missing values between known values. The
Position Control Unit uses interpolation when positioning along both axes
simultaneously. There are two types of interpolation possible: straight-line and
circular arc.
A setting which determines whether or not a positioning action uses
interpolation, and, if so, defines the type of interpolation.
The point which is defined as the final point for interpolated positioning. The
three types of interpolation points are: interpolation end point, circular arc
intermediate point, and circular arc center.
An abbreviation for machine code. The user can set various M codes for various
positions so that each M code will be output when the workpiece passes its
respective position.
Normally-closed contacts. A pair of contacts on a relay that open when the relay
is energized.
Normally-open contacts. A pair of contacts on a relay that close when the relay is
energized.
An abbreviation for operation code. This code is used to designate the DM area
address for each command.
A control system in which operations are carried out according to programmed
instructions, but in which feedback is not provided for automatic adjustments.
The point which is designated as 0 at any given time.
A parameter used to correct the origin from the position determined according to
the origin input signal.
A signal input to indicate when the position is near the origin to enable shifting to
a lower speed.
The region near the origin. When positioning enters this region, a proximity
switch may output a signal for deceleration.
User-defined codes output following completion of a positioning action.
Data which determines limits and other conditions under which an operation will
be carried out.
The fundamental unit of positioning. A particular positioning action moves the
workpiece along one or both axes in a direction, at a speed, and to a position
determined by the data which has been set as part of the positioning action.
The numeric value in pulses defined as being the "location" of the positioning
system at any one point in time. The present position position is not absolute, but
rather can be redefined as required by positioning operations.
Discrete signals sent at a certain rate. The Position Control Unit outputs pulses,
each of which designates a certain amount of movement. Such pulses are
converted to an equivalent control voltage in actual positioning.
The distance moved the motor shaft divided by the number of pulses required for
that movement.
A series of pulses output together.
A control system in which a PC controls an external process without human
intervention. This system provides feedback (via a tachogenerator and a rotary
encoder) so that actual values (of positions, speeds, and so on) are continuously
adjusted to bring them more closely in line with target values.
An operation whereby a rotary encoder is used to maintain the position of a
motor while it is stopped. Whenever the motor axis moves, the rotary encoder
sends a feedback pulse to an error counter, causing a rotation voltage to be
generated in the reverse direction so that the motor rotates back to its original
position.