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5
Control signal input switches
C200H PC
Position Control Unit C200H-NC111
Input Unit
Stepping motor (or ser-
vomotor) driver control
signal line
Power supply
Hand-held Programming
Console C200H-PRO27
Stepping motor driver
(or servomotor driver)
Operation panel
Operation switch
Stepping motor
(or servomotor)
1–4
Control System Principles
Control systems can be quite simple or relatively complex. The most basic is
an open-loop system, in which a particular operation is carried out, according
to programmed instructions, but in which adjustments are not made directly
by the PC. Instead, the open-loop system typically displays or prints out infor-
mation to assist a human operator in making any required adjustments. The
C200H-NC111 Position Control Unit can be used in an open-loop system in
conjunction with a stepping motor.
In a closed-loop system, on the other hand, the PC controls an external proc-
ess without human intervention. The servomotor provides direct feedback so
that actual values (of positions, speeds, and so on) are continuously adjusted
Control System Principles
Section 1–4
Содержание SYSMAC C200H-NC111
Страница 1: ...Cat No W137 E1 04 Position Control Unit SYSMAC C200H NC111...
Страница 2: ...SYSMAC C200H NC111 Position Control Unit Operation Manual Revised September 2003...
Страница 3: ...iv...
Страница 5: ...vi...