Siemens SINUMERIK 840D sl Programming Manual page 7

Table of contents
Preface ...................................................................................................................................................... 3
1 Flexible NC programming ........................................................................................................................ 17
1.1 Variables ......................................................................................................................................17
1.1.1 System variable............................................................................................................................17
1.1.2 Predefined user variables: Arithmetic parameters (R).................................................................20
1.1.3 Predefined user variables: Link variables ....................................................................................21
1.1.4 Definition of user variables (DEF) ................................................................................................24
1.1.5 Redefinition of system variables, user variables, and NC language commands (REDEF) .........29
1.1.6 Attribute: Initialization value .........................................................................................................32
1.1.7 Attribute: Limit values (LLI, ULI)...................................................................................................35
1.1.8 Attribute: Physical unit (PHU) ......................................................................................................37
1.1.9 Attribute: Access rights (APR, APW, APRP, APWP, APRB, APWB) ..........................................39
1.1.10 Overview of definable and redefinable attributes.........................................................................44
1.1.11 Definition and initialization of array variables (DEF, SET, REP) .................................................45
1.1.12 Definition and initialization of array variables (DEF, SET, REP): Further Information.................49
1.1.13 Data types ....................................................................................................................................52
1.1.14 Explicit data type conversions (AXTOINT, INTTOAX).................................................................53
1.1.15 Check availability of a variable (ISVAR) ......................................................................................54
1.1.16 Read attribute values / data type (GETVARPHU, GETVARAP, GETVARLIM,
GETVARDFT, GETVARTYP) ......................................................................................................56
1.2 Indirect programming ...................................................................................................................61
1.2.1 Indirectly programming addresses...............................................................................................61
1.2.2 Indirectly programming G codes ..................................................................................................64
1.2.3 Indirectly programming position attributes (GP) ..........................................................................65
1.2.4 Indirectly programming part program lines (EXECSTRING) .......................................................68
1.3 Arithmetic functions......................................................................................................................69
1.4 Comparison and logic operations ................................................................................................71
1.5 Precision correction on comparison errors (TRUNC) ..................................................................73
1.6 Variable minimum, maximum and range (MINVAL, MAXVAL and BOUND) ..............................74
1.7 Priority of the operations ..............................................................................................................76
1.8 Possible type conversions ...........................................................................................................77
1.9 String operations..........................................................................................................................78
1.9.1 Type conversion to STRING (AXSTRING) ..................................................................................78
1.9.2 Type conversion from STRING (NUMBER, ISNUMBER, AXNAME) ..........................................79
1.9.3 Concatenation of strings (<<).......................................................................................................81
1.9.4 Conversion to lower/upper case letters (TOLOWER, TOUPPER) ..............................................82
1.9.5 Determine length of string (STRLEN) ..........................................................................................83
1.9.6 Search for character/string in the string (INDEX, RINDEX, MINDEX, MATCH)..........................83
1.9.7 Selection of a substring (SUBSTR) .............................................................................................85
1.9.8 Reading and writing of individual characters ...............................................................................85
1.9.9 Formatting a string (SPRINT) ......................................................................................................87
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Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
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