Additional functions
14.9 Program runtime/part counter
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
683
14.9 Program runtime/part counter
14.9.1 Program runtime/part counter (overview)
Information on the program runtime and workpiece counter are provided to support the
machine tool operator.
This information can be processed as system variables in the NC and/or PLC program. This
information is also available to be displayed on the operator interface.
14.9.2 Program runtime
Function
The "program runtime" function provides internal NC timers to monitor technological
processes, which can be read into the part program and into synchronized actions via the
NC and channel-specific system variables.
The trigger for the runtime measurement ($AC_PROG_NET_TIME_TRIGGER) is the only
system variable of the function that can be written to and is used to selectively measure
program sections. This means that by writing the trigger into the NC program, the time
measurement can be activated and deactivated.
System variable Meaning Activity
NC-specific
$AN_SETUP_TIME Time since the last control power up with default
values ("cold restart") in minutes.
Is automatically reset to "0" every time the control
powers up with default values.
$AN_POWERON_TIME Time since the last normal control power up ("warm
restart") in minutes.
Is automatically reset to "0" every time the control
powers up normally.
• Always active
Channel-specific
$AC_OPERATING_TIME Total runtime of NC programs in automatic mode in
seconds.
The value is automatically reset to "0" every time the
control powers up.
$AC_CYCLE_TIME Runtime of the selected NC program in seconds.
The value is automatically reset to "0" every time a
new NC program starts up.
• Activated via
MD27860
• Only AUTOMATIC
mode
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