Flexible NC programming
1.1 Variables
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
39
<unit> Meaning Physical unit
32 Inductance [ mH ]
33 Torque
3)
[ Nm ]
34 Torque constant
3)
[ Nm/A ]
35 Current controller gain [ V/A ]
36 Speed controller gain
3)
[ Nm/(rad*s) ]
37 Speed [ rpm ]
42 Power [ kW ]
43 Current, low [ μA ]
46 Torque, low
3)
[ μNm ]
48 Per mil -
49 - [ Hz/s ]
65 Flow rate [ l/min ]
66 Pressure [ bar ]
67 Volume
3)
[ cm
3
]
68 Controlled-system gain
3)
[ mm/(V*min) ]
69 Force controller controlled-system gain [ N/V ]
155 Thread lead
3)
[ mm/rev ], [ inch/rev ]
156 Change in thread lead
3)
[ mm/rev / rev ], [ inch/rev / rev ]
1) The physical unit is dependent on the axis type: linear or rotary axis.
2) System of units changeover
G70/G71(inch/metric)
After changing over the basic system (MD10240 $MN_SCALING_SYSTEM_IS_METRIC) with
G70/G71, for read/write operations to system and user variables involving a length, then the values
are not converted (actual value, default value and limit values)
G700/G710(inch/metric)
After changing over the basic system (MD10240 $MN_SCALING_SYSTEM_IS_METRIC) with
G700/G710, for read/write operations to system and user variables involving a length, then the values
are converted (actual value, default value and limit values)
3) The variable is not converted to the NC's current measuring system (inch/metric) automatically.
Conversion is the sole responsibility of the user/machine manufacturer.
Note
Level overflow due to format conversion
The internal storage format for all user variables (GUD/PUD/LUD) with physical units of
length is metric. Excessive use of these types of variable in the NCK's main run, e.g in
synchronized actions, can lead to a CPU time overflow at interpolation level when the
measuring system is switched over, generating alarm 4240.
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