Flexible NC programming
1.1 Variables
Job planning
16 Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
See also
System variables (Page 16)
Predefined user variables: Arithmetic parameters (R) (Page 19)
Predefined user variables: Link variables (Page 20)
Attribute: Initialization value (Page 33)
Attribute: Limit values (LLI, ULI) (Page 36)
Attribute: Physical unit (PHU) (Page 38)
Attribute: Access rights (APR, APW, APRP, APWP, APRB, APWB) (Page 40)
Overview of definable and redefinable attributes (Page 45)
Definition and initialization of array variables (DEF, SET, REP) (Page 46)
Data types (Page 53)
1.1.2 System variables
System variables are variables which are predefined in the system and provide access to the
current parameter settings associated with the control, as well as machine, control, and
process statuses, in part programs and cycles.
Preprocessing variables
Preprocessing variables are system variables which are read and written in the context of
preprocessing; in other words at the point in time at which the part program block in which
the system variable is programmed is interpreted. Preprocessing variables do not trigger
preprocessing stops.
Main run variables
Main run variables are system variables which are read and written in the context of the main
run; in other words at the point in time at which the part program block in which the system
variable is programmed is executed. The following are main run variables:
● System variables which can be programmed in synchronized actions (read/write)
● System variables which can be programmed in the part program and trigger
preprocessing stops (read/write)
● System variables which can be programmed in the part program and whose value is
calculated during preprocessing but not written until the main run (main run synchronized:
write only).
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