Omron SYSMAC C200H-NC111, Руководство по эксплуатации

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Glossary
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pulse train
A series of pulses output together.
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.
Remote I/O Master Unit
The Unit in a Remote I/O System through which signals are sent to all other
Remote I/O Units. The Remote I/O Master Unit is mounted either to a CPU
Rack or to an Expansion I/O Rack connected to the CPU Rack.
Remote I/O System
A system in which remote I/O points are controlled through a Master
mounted to a CPU Rack or an Expansion I/O Rack connected to the CPU
Rack.
Remote I/O Units
Any of the Units in a Remote I/O System. Remote I/O Units include Masters,
Slaves, Optical I/O Units, I/O Link Units, and Remote Terminals.
response time
The time it takes for the PC to output a control signal after it has received an
input signal. The response time depends on factors such as the system con-
figuration and when the CPU receives the input signal relative to the start of
a scan.
scan time
The total time required for the PC to perform all of the operations involved in
executing the program in its memory. The duration of the scan time differs
depending on the configuration of the system, the number of I/O points, the
programming instructions used, and so on.
search pattern
The pattern in which origin search is carried out. The particular search pat-
tern performed depends on the position of the origin with respect to the initial
position and the search direction (CW or CCW).
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 ro-
tary encoder) so that actual values (of positions, speeds, and so on) are con-
tinuously 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 en-
coder 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.
single (completion)
A positioning action completion code that causes positioning to stop after the
target position has been reached.
Special I/O Unit
A dedicated Unit, such as a Position Control Unit, High-Speed Counter Unit,
or Analog Timer Unit, which is designed for a special purpose.