Reference point configuration
(Original Document)
About us
At a Glance
In order for a movement to be transformed into a position, it is necessary to assign a known dimension (generally selected as equal to 0) to a specific point on the axis. This operation is called setting the 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.
Description
The Reference point field defines the type and direction of the reference point.
The types short cam and long cam are linked by connecting a reference point detector on the cam reference point input. The types end of run limit assume that end of run detectors have been installed.
Possibilities
Approach speed (1)
Reference Point Speed
Icon
Short cam, + direction
F
F
(2)
Short cam, - direction
F
SS_FREQ
(2)
Long cam, + direction
F
SS_FREQ
(2)
Long cam, - direction
F
SS_FREQ
(2)
End of run limit, + direction
F
SS_FREQ
(2)
End of run limit, - direction
F
SS_FREQ
(2)
(1) F is the speed programmed in the instruction in automatic mode or the FMANU speed (defined in the adjustment screen) in manual mode. This speed can be modulated by the CMV (Speed Modulation Coefficient).
(2) The icon illustrates the reference point.
Reference point command
The reference point command is carried out:
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:
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.
Short cam reference point
The following table gives a detailed description of short cam reference points
Type
Short cam
Direction
+Direction
-Direction
Icon
Long cam reference point
The following table gives a detailed description of long cam reference points
Type
Long cam
Direction
+ Direction, start away from the cam
- Direction, start away from the cam
Icon
Direction
+ Direction, start towards the cam
- Direction, start towards the cam
Icon
Reference point end of run limit
The following table gives a detailed description of end of run limit reference points
Type
End of run limit
Direction
+ Direction, start away from the cam
- Direction, start away from the cam
Icon
Direction
+ Direction, start towards the cam
- Direction, start towards the cam
Icon