
13. DIAGNOSIS INFORMATION
763
D Details of invalid servo parameter alarms (on the CNC side)
This data indicates the cause of servo alarm ALM417, detected by the
NC. If the alarm is detected by the servo, the DGN203#4 (PRM) is set
to 1.
#7
#6 #5 #4 #3 #2 #1 #0
280DGN
AXS DIR PLS PLC MOT
MOT : The motor type specified in PRM2020 falls outside the
predetermined range.
PLC : The number of velocity feedback pulses per motor revolution,
specified in PRM2023, is zero or less. The value is invalid.
PLS : The number of position feedback pulses per motor revolution,
specified in PRM2024, is zero or less. The value is invalid.
DIR : The wrong direction of rotation for the motor is specified in
PRM2022 (the value is other than 111 or –111).
AXS : In PRM1023 (servo axis number), a value that falls outside the
range of 1 to the number of controlled axes is specified. (For
example, 4 is specified instead of 3.) Alternatively, the values
specified in the parameter are not consecutive.
13.2.7 Positional error display (DGN300)
300
Position error in each axis [Detection unit]
DGN
Position error +
Feedrate [mmńmin]
60 servo loop gain [1ńsec]
1
Detection unit
13.2.8 Machine position (DGN301)
301
Distance from reference position in each axis [Least input increment]
DGN
The machine position from the reference point is displayed in least command
units.
13.2.9 Reference position shift function display (DGN302)
302
Distance from the end of the deceleration dog to the first grid point
[Output unit]
DGN
The distance from the deceleration dog to the first grid point is displayed.
13.2.10 Position deviation with fine acceleration/deceleration
enabled (DGN303)
303
Position deviation with fine acceleration/deceleration enabled
[Detection unit]
DGN
13.2.11 Reference counter (DGN304)
304
Reference counter for individual axes [Detection unit]
DGN