Default Axis Identifier (No_Axis) - Siemens SINUMERIK 840D sl Programming Manual

Note
STRING type variables in synchronized actions have a fixed length of 32 characters.
• Array size corresponding to <value> of machine data
• Predefined names in accordance with previous list of predefined variable names.
• Access via HMI in the same way as access to the GUDs created using the definition file.
• The protection level assignments which are already possible in a GUD definition file using
• Deletion behavior: If the content of a particular GUD definition file is re-activated, the old
10.3.4

Default axis identifier (NO_AXIS)

Function
AXIS type variables or parameters which have not been initialized by a value can be
provided with defined default axis identifiers. Undefined axis variables are also initialized with
this default value.
Non-initialized valid axis names are recognized in synchronized actions by querying the
"NO_AXIS" variable. This non-initialized axis identifier is assigned the configured default axis
identifier by machine data.
Machine manufacturer
At least one valid existing axis identifier must be defined and pre-assigned using machine
data. All existing valid axis identifiers can however be pre-assigned. Please refer to the
machine manufacturer's instructions.
Note
During definition, newly created variables are now automatically given the value saved in the
machine data for default axis names. For additional information on a definition applicable via
machine data, see:
References:
/FBSY/Description of Functions; Synchronized Actions
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
keywords APR and APW remain valid and only relate to the GUDs defined in these GUD
definition files.
GUD data block in the memory of the active file system is deleted first. The new
parameters are also reset at the same time. This process can also be undertaken via HMI
in the Services operating area in the "Define and activate user data (GUD)" user
interface.
Motion synchronous actions
10.3 Main run variables for synchronized actions
10-13