Omron SYSMAC C500-NC222-E, Руководство по эксплуатации

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Glossary
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flag A bit that is turned ON and OFF automatically by the system to provide status
information.
gain The increase in signal power produced by an amplifier.
hunting The tendency, in servosystems, to overcompensate when the system’s
momentum carries it past the target position.
inching Manual feeding wherein positioning is executed one pulse at a time.
incremental position A position given in respect to the present position, rather than in respect to the
origin.
initial position The present position when a start command is executed.
interpolation 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.
interpolation code A setting which determines whether or not a positioning action uses
interpolation, and, if so, defines the type of interpolation.
interpolation end point 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.
M code 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.
NC contacts Normally-closed contacts. A pair of contacts on a relay that open when the relay
is energized.
NO contacts Normally-open contacts. A pair of contacts on a relay that close when the relay is
energized.
op code An abbreviation for operation code. This code is used to designate the DM area
address for each command.
open-loop system A control system in which operations are carried out according to programmed
instructions, but in which feedback is not provided for automatic adjustments.
origin The point which is designated as 0 at any given time.
origin compensation A parameter used to correct the origin from the position determined according to
the origin input signal.
origin proximity signal A signal input to indicate when the position is near the origin to enable shifting to
a lower speed.
origin proximity The region near the origin. When positioning enters this region, a proximity
switch may output a signal for deceleration.
output code User-defined codes output following completion of a positioning action.
parameters Data which determines limits and other conditions under which an operation will
be carried out.
positioning action 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.
present position 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.
pulses 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.
pulse rate The distance moved the motor shaft divided by the number of pulses required for
that movement.
pulse train A series of pulses output together.
semiclosed-loop system 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.
servolock 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.