Configuration
Reference point configuration
Introduction So that a movement can be turned into a position, it is necessary to assign a known dimension (generally selected as equal to 0) to a particular point on the axis. This operation is called setting the origin or reference point. An axis on which a reference point has been set is known as "referenced".
Illustration of the
Reference point field
The reference point pick list is as follows.
Reference point
Short cam / + Direction
Short cam / + Direction
Short cam / - Direction
Short cam / + Direction
Short cam / - Direction
On limit stop / + Direction
Description The Reference point field defines the type and the direction of the reference point.
The types short cam and long cam are linked to the installation of a reference point sensor on the cam reference point input. The types end of run limit assume an installation of end of run detectors.
Possibilities Icon
Short cam, + direction
Approach speed (1)
F
Reference
Point Speed
F (2)
Short cam, - direction
Long cam, + direction
F
F
SS_FREQ (2)
SS_FREQ (2)
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Possibilities
Long cam, - direction
End of run limit, + direction
End of run limit, - direction
Approach speed (1)
F
Configuration
Reference
Point Speed
SS_FREQ
Icon
(2)
F SS_FREQ (2)
F SS_FREQ (2)
(1) F is the speed programmed in the instruction in automatic mode or the speed
FMANU (defined in the adjustment screen) in manual mode. This speed can be modulated by the CMV coefficient.
(2) The icon illustrates the reference point.
Reference point command
The reference point command is carried out: l l in automatic mode, using instruction code 14: set reference point, in manual mode, using the command SET_RP: set manual reference point.
If SS_FREQ is zero, and if the reference point speed is SS_FREQ, then the actual reference point speed is the smallest that the module can generate in the selected range.
Note: SS_FREQ = the start stop frequency.
Forced reference point
There is also a forced reference point mechanism: l l command G62 in Auto mode, command RP_HERE in Manu mode.
This setting of the reference point consists in forcing the position to a specified value. This operation does not entail any movement and therefore does not take account of the type of RP selected.
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Configuration
Reference point short cam
The following table gives a detailed description of reference points short cam
Type
Direction
Icon
Short cam
+ Direction - Direction
Movement
Cam
Reference point long cam
The following table gives a detailed description of reference points long cam
Type
Direction
Long cam
+ Direction, start away from the cam
- Direction, start away from the cam
Icon
Movement
Cam
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Type
Direction
Icon
Configuration
Long cam
+ Direction, start towards the cam
- Direction, start towards the cam
Movement
Cam
Reference point end of run limit
The following table gives a detailed description of reference points end of run limit
Type
Direction
End of run limit
+ Direction, start away from the cam
- Direction, start away from the cam
Icon
Movement
Cam
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Configuration
Type
Direction
Icon
End of run limit
+ Direction, start towards the cam
- Direction, start towards the cam
Movement
Cam
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