Programming
8.10 Timers and workpiece counters
8-186
SINUMERIK 802D sl Operation and Programming Nibbling (BP-N), 06/2006 Edition
6FC5 398-3CP10-0BA0
8.10 Timers and workpiece counters
8.10.1 Runtime timers
Functionality
The timers are provided as system variables ($A...) which can be used either for monitoring
of the technological processes in the program or only in the display.
These timers can only be read. There are timers that are always active. Others can be deac-
tivated via machine data.
Timers – always active
S $AN_SETUP_TIME – Time since the last “Control boot with
default values” ( in minutes )
It is automatically set to zero upon “Control boot with default values”.
S $AN_POWERON_TIME – Time since the last booting of the control
(in minutes)
It is automatically set to zero upon every booting of the control.
Timers that can be deactivated
The following timers are activated via machine data (default setting).
The start is timer-specific. Each active execution time measurement is interrupted automati-
cally in the stopped program status or at feedrate override =zero.
The behavior of the activated time measurements in active dry run feedrate and program
test can be defined by machine data.
S $AC_OPERATING_TIME – Total operating time of NC programs in the
AUTOMATIC mode (in seconds)
The operating times of all programs between NC start and program end / reset are to-
taled in the AUTOMATIC mode. The timer is zeroed with each power-up of the control
system.
S $AC_CYCLE_TIME – Operating time of the selected NC program
(in seconds)
The runtime between NC start and program end / reset is measured in the selected NC
program. The timer is reset with the start of a new NC program.
S $AC_CUTTING_TIME – Tool operating time (in seconds):
The runtime of the path axes without active rapid traverse in all NC programs between
NC start and program end / reset with active tool is measured.
The measurement is also interrupted with active dwell time.
The timer is zeroed automatically at a “Controller run-up with default values”.
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