Yaskawa MP900 Series Ladder Programming Manual Manual de usuario Pagina 54

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4.4 Registers (Variables)
4.4.1 What Are Registers?
4-13
Programming
4
4.4 Registers (Variables)
4.4.1 What Are Registers?
Registers are areas that store data within the Machine Controller. Variables are registers with labels (variable names).
There are two kinds of registers: global registers that are shared between all programs, and local registers that are used
only by a specific program.
( 1 ) Global Registers
Global registers are variables that are shared by ladder programs, user functions, motion programs, and sequence pro-
grams. Memory space for global registers is reserved by the system for each register type.
( 2 ) Local Registers
Local registers can be used within a specific drawing. They cannot be used in other drawings.
Ladder programs User functions
Motion programs/
sequence programs
S registers
8,192 words
M registers
65,535 words
I registers
32,768 words +
Monitor parameters
O registers
32,768 words +
Setting parameters
C registers
16,384 words
Global Registers
Parent drawing
H
Child drawing
H01
User function
FUNC01
User function
FUNC02
# registers
D registers
# registers
D registers
X registers
Y registers
Z registers
# registers
D registers
X registers
Y registers
Z registers
# registers
D registers
Local Registers
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