Local User Data (Lud) - Siemens SINUMERIK 802D Programming And Operating Manual

Programming
10.9 Arithmetic parameters, LUD and PLC variables
Programming example: Assign R parameters to the axes
N10 G1 G91 X=R1 Z=R2 F300
N20 Z=R3
N30 X=-R4
N40 Z= SIN(25.3)-R5
...
Programming example: Indirect programming
N10 R1=5
...
N100 R[R1]=27.123
10.9.2

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 32 characters can be used.
● It is imperative to use letters for the first two characters; the remaining characters can be
● Do not use a name already used in the control system (NC addresses, keywords, names
Programming / data types
DEF BOOL varname1
DEF CHAR varname2
DEF INT varname3
DEF REAL varname4
306
either letters, underscore or digits.
of programs, subroutines, etc.).
;Separate blocks (traversing blocks)
;With arithmetic operations
;Assigning R1 directly value 5 (integer)
;Indirectly assign R5 the value 27.123
;Boolean typ, values: TRUE (=1), FALSE (=0)
;Char type, 1 ASCII code character: "a", "b", ...
;Numerical code value: 0 ... 255
;Integer type, integer values, 32 bit value range:
;-2 147 483 648 through +2 147 483 647 (decimal)
;Real type, natural number (like arithmetic parameter
R),
;Value range: ±(0.000 0001 ... 9999 9999)
Programming and Operating Manual, 07/2009, 6FC5398-4CP10-2BA0
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