Siemens SINUMERIK 828D Function Manual page 665

Activation/Deactivation
The timer that can be activated is switched-in/switched-out using machine data:
MD27860 $MC_PROCESSTIMER_MODE, Bit 0-2
Bit Value Meaning
0 0 Timer for $AC_OPERATING_TIME not active.
1 Timer for $AC_OPERATING_TIME active.
1 0 Timer for $AC_CYCLE_TIME not active.
1 Timer for $AC_CYCLE_TIME active.
2 0 Timer for $AC_CUTTING_TIME not active.
1 Timer for $AC_CUTTING_TIME active.
Parameter assignment
Behavior of the timer that is always active
The behavior of the timer that is always active for GOTOS and override = 0% is set using machine data:
MD27850 $MC_PROG_NET_TIMER_MODE
Bit Value Meaning
0 0 $AC_ACT_PROG_NET_TIME is not reset to "0" in case of a jump with GOTOS to the
program start (initial setting).
1 With a jump with GOTOS to the start of the program, $AC_ACT_PROG_NET_TIME is
reset to "0", the value is first saved in $AC_OLD_PROG_NET_TIME and the program
counter $AC_OLD_PROG_NET_TIME_COUNT is incremented.
1 0 For override = 0%, $AC_ACT_PROG_NET_TIME is not increased. This means that
the program runtime is measured without the time for which the override was set to "0"
(basic setting).
1 Also for override = 0%, $AC_ACT_PROG_NET_TIME is increased. This means that
the program runtime is measured with the time for which the override was set to "0".
Behavior of the timer that can be activated
The behavior of the timer that can be activated for certain functions (e.g. test run feedrate, program test) is set
using machine data:
MD27860 $MC_PROCESSTIMER_MODE
Bit Value Meaning
4 0 No measurement during active dry run feedrate.
1 Measurement during active dry run feedrate.
5 0 No measurement during program test.
1 Measurement during program test.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
K1: Mode group, channel, program operation, reset response
9.16 Program runtime / Part counter
665