Siemens SINUMERIK 840Di Function Manual page 6

Preface
Data types
The following elementary data types are used in the control system:
Type Meaning
INT Signed integers
REAL Figures with decimal point acc. to IEEE
BOOL Boolean values: TRUE/FALSE
CHAR 1 ASCII character corresponding to the code
STRING Character string, number of characters in [...], maximum of
200 characters
AXIS Axis identifier
FRAME Geometrical parameters for translation, rotation, scaling,
and mirroring
Arrays can only be formed from similar elementary data types. Up to two-dimensional arrays are possible.
Quantity framework
Explanations concerning the NC/PLC interface are based on the absolute maximum number
of sequential components:
• Mode groups (DB11)
• Channels (DB21, etc.)
• Axes/spindles (DB31, etc.)
The actual possible number of components listed above for a specific product can be found
in the following ordering documentation:
References:
/BU/ Ordering Documentation Catalog NC
vi
Value range
±(2 - 1)
31
±(10 ... 10
-300 +300
TRUE ≠ 0; FALSE = 0
0 ... 255
Sequence of values with 0 ... 255
Axis identifier for all channel axes
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
)
Basic Machine