Curve Tables (Ctab); Curve Tables: General Relationships - Siemens SINUMERIK 840D sl Programming Manual

Path traversing behavior

9.3 Curve tables (CTAB)

9.3 Curve tables (CTAB)
9.3
9.3.1

Curve tables: general relationships

Function
The Curve tables section contains the program commands that can be used to program the
relationships between two axes (leading and following axis).
A following variable can be assigned uniquely to each master value within a defined master
value range. If the master value is outside the definition range, the behavior at the edge of
the curve table can be programmed for periodic and non-periodic curve tables.
Description
The mechanical cams are replaced by curve tables that can be used to define
• the specific curve traces in a definition range
• individual sections, known as curve segments
• the edges of the curve for periodic and non-periodic curve tables
• the curve segment positions concerned
In a defined value range of
• the associated table positions and
• the start and end values of a table segment
the corresponding slave value for a master value and similarly the master value for a slave
value can be read.
All other forms are shown and optional parameters can be assigned to the associated
program commands. The resulting possibilities to influence specific individual or several
curve tables in the corresponding memory type provide a flexible programming for further
applications. This also provides comprehensive possibilities for programming the diagnosis
of axis couplings.
Typical program examples are provided for the definition of curve tables and the access to
curve table positions .
9-12
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
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