Omron SCARA YRCX Series, Programming Manual, Page: 39 / 506

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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)]