Evaluating Data For Machine Maintenance - Siemens SINUMERIK 840Di sl Function Manual

2.4.23

Evaluating data for machine maintenance

Function
Machine operators are able to use system variables in part programs, synchronized actions
and via the BTSS interface (even from a PLC or HMI) to access information about the use of
the machine.
Maintenance measures can then be taken directly or requested on the basis of the values
read out.
Saving
The system variables for machine maintenance are stored in SRAM. This means that they
are retained after POWER ON.
Note
In contrast, the lubricant signal is only ever set if an axis path stored in a machine data has
been exceeded since POWER ON. See:
References:
/FB1/ Function Manual Basic Functions; Various NC/PLC-Interface signals and functions
(A2), Chapters "Signals from Axis/Spindle".
Availability
The values for machine maintenance are available if the global NCK machine data is set:
MD18860 $MN_MM_MAINTENANCE_MON (Activate recording of maintenance data)
And when axis-specific machine data has been used to indicate which data should be
provided for each axis involved.
The following machine data is used to activate the function of and prepare the memory for
the values indicated in the axis-specific MD. Changes of the following machine data become
effective with Power On.
MD18860 $MC_MM_MAINTENANCE_MON
Axis-specific values:
The following can be specified in MD33060 $MA_MAINTENANCE_DATA using bit coding:
Bit 0:
Bit 1:
Bit 2:
Bits 3 - 15:
Synchronized actions
Function Manual, 11/2006, 6FC5397-5BP10-2BA0
Total travel distance, total travel time and travel count of the axis
Total travel distance, total travel time and travel count at high speeds of the axis High
speeds are = 80% of the maximum axis speed
Total axis jerk, travel time with jerk and travel count with jerk
Reserved
Detailed description
2.4 Actions in synchronized actions
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