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System Variables 3-7
9
System Variables
The following system variables are pre-defined, and other variable names must not begin with the
characters used for these system variable names.
Variable Type
Format
Meaning
Point variable
Pnnn / P [
expression
]
Specifies a point number
Shift variable
Sn / S [
expression
]
Specifies the shift number as a constant
or as an expression
Parallel input variable
DI(mb), DIm(b)
Parallel input signal status
Parallel output variable
DO(mb), DOm(b)
Parallel output signal setting and status
Internal output variable
MO(mb), MOm(b)
Controller's internal output signal setting
and status
Arm lock output variable
LO(mb), LOm(b)
Axis-specific movement prohibit
Timer output variable
TO(mb), TOm(b)
For sequence program's timer function
Serial input variable
SI(mb), SIm(b)
Serial input signal status
Serial output variable
SO(mb), SOm(b)
Serial output signal setting and status
Serial word input
SIW(m)
Serial input's word information status
Serial double-word input
SID(m)
Serial input's double-word information
status
Serial word output
SOW(m)
Serial output's word information status
Serial double-word output
SOD(m)
Serial output's double-word information
status
9.1
Point variable
This variable specifies a point data number with a numeric constant or expression.
Format
Pnnnnn or P[expression]
Values
n: Point number .................... 0 to 9
Functions
A point data number is expressed with a "P" followed by a number of 5 digits or less, or
an
expression
surrounded by brackets ([
expression
])
Point numbers from 0 to 29999 can be specified with point variables.
Examples: P0
P110
P[A]
P[START_POINT]
P[A(10)]
Содержание SCARA YRCX Series
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