Path Length Evaluation / Machine Maintenance ($Aa_Travel - Siemens SINUMERIK 840D sl Function Manual

Detailed description
3.3 System variables for synchronized actions
See also
Machine and setting data ($$M, $$S) (Page 29)
3.3.15 Path length evaluation / machine maintenance ($AA_TRAVEL ... , $AA_JERK ... )
The data of the path length evaluation, e.g. for machine maintenance, can be read via the
system variables listed below.
Activation
The activation for the recording of the path length evaluation data is performed via:
MD18860 $MN_MM_MAINTENANCE_MON = 1
The data to be recorded for the specific axis can be selected via the following axis-specific
machine data:
MD33060 $MA_MAINTENANCE_DATA[<axis>], bit n = 1
Bit
0
1
2
System variable
System variable
$AA_TRAVEL_DIST
$AA_TRAVEL_TIME
$AA_TRAVEL_COUNT
$AA_TRAVEL_DIST_HS
$AA_TRAVEL_TIME_HS
$AA_TRAVEL_COUNT_HS
$AA_JERK_TOT
$AA_JERK_TIME
$AA_JERK_COUNT
Actual machine axis velocity ≥ 80% of the maximum parameterized axis velocity (MD32000 MAX_AX_VELO)
1)
42
Meaning
Recording of total traversing distance, total traversing time and number of traversing operations
of the axis.
Recording of total traversing distance, total traversing time and number of traversing operations
of the axis at high speed.
Recording of total number of axis jerks, the time during which the axis is traversed with jerk and
the number of traversing operations with jerk.
Meaning
Total travel distance:
Sum of all set position changes in MCS in [mm] or [deg.]
Total travel time:
Sum of IPO cycles of set position changes in MCS in [s] (resolution: 1 IPO
cycle)
Total travel count:
A complete machine axis trip is defined by the following succession of states,
as based on set position: standstill > traversing > standstill
Total traversing distance at high axis velocities
Total traversing time at high axis velocities
Total number of traversing operations at high axis velocities
Total sum of axis jerks:
Sum of all jerk setpoints in [m/s
Total travel time with jerk:
Sum of IPO cycles from jerk setpoint changes in [s] (solution: 1 IPO cycle)
Total number of traversing operations with jerk
1)
1)
] or [deg./ s ]
3 3
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
n
0
1
3)
2
Synchronized actions