Siemens SINUMERIK User Manual

Programming and Operating Manual (Turning)
126 01/2017
N100 R[R1]=27.123
;Indirectly assign R5 the value 27.123
M30
11.14.2
Local User Data (LUD)
Functionality
The operator/programmer (user) can define his/her own variable in the program from various data types (LUD = Local User
Data). These variables are only available in the program in which they were defined. The definition takes place immediately
at the start of the program and can also be associated with a value assignment at the same time. Otherwise the starting
value is zero.
The name of a variable can be defined by the programmer. The naming is subject to the following rules:
● A maximum of 31 characters can be used.
● It is imperative to use letters for the first two characters; the remaining characters can be either letters, underscore or
digits.
● Do not use a name already used in the control system (NC addresses, keywords, names of programs, subroutines, etc.).
Programming / data types
DEF BOOL varname1
;Boolean type, values: TRUE (=1), FALSE (=0)
DEF CHAR varname2
;Char type, 1 ASCII code character: "a", "b", ...
;Numerical code value: 0 ... 255
DEF INT varname3
;Integer type, integer values, 32 bit value range:
;-2 147 483 648 through +2 147 483 647 (decimal)
DEF REAL varname4
;Real type, natural number (like arithmetic parameter R),
;Value range: ±(0.000 0001 ... 9999 9999)
;(8 decimal places, arithmetic sign and decimal point) or
;Exponential notation: ± (10 to power of -300 ... 10 to power of +300)
DEF STRING[string length] varname41
; STRING type, [string length]: Maximum number of characters
Each data type requires its own program line. However, several variables of the same type can be defined in one line.
Example:
DEF INT PVAR1, PVAR2, PVAR3=12, PVAR4
;4 type INT variables
Example for STRING type with assignment:
DEF STRING[12] PVAR="Hello"
; Define variable PVAR with a maximum of 12 char-
acters and assign string "Hello"
Fields
In addition to the individual variables, one or two-dimensional fields of variables of these data types can also be defined:
DEF INT PVAR5[n]
;One-dimensional field, type INT, n: integer
DEF INT PVAR6[n,m]
;Two-dimensional field, type INT, n, m: integer
Example:
DEF INT PVAR7[3]
;Field with 3 elements of the type INT
Within the program, the individual field elements can be reached via the field index and can be treated like individual
variables. The field index runs from 0 to a small number of the elements.
Example:
N10 PVAR7[2]=24
;The third field element (with index 2) is assigned the value
24.
Value assignment for field with SET instruction:
N20 PVAR5[2]=SET(1,2,3)
;After the 3rd field element, different values are assigned.
Value assignment for field with REP instruction:
N20 PVAR7[4]=REP(2)
;After field element [4] - all are assigned the same value,
here 2.

Siemens SINUMERIK Specifications

General

Brand	Siemens
Model	SINUMERIK
Category	Control Unit
Language	English