Festo CMMP-AS User Manual

1. General remarks
11 Festo.P.BE-CMMP-CAM-SW-EN en 1105a
1.4 Terms related to the cam disc
Term
Explanation / reference
Cam disc , cam
The motion sequence of a slave dependent on the positions of a master. Cam
disc and cam are used synonymously. See section 4.1 Fundamentals.
Master, master encoder,
master drive
See section 4.1 Fundamentals.
Physical master
See section 4.3 Physical master.
Virtual master
See section 4.4 Virtual master.
Master setpoint value,
master setpoint
position, time angle, X
value of the cam disc
The specification for the slave on the X-axis of the cam disc The actual position
of the master can deviate from this, see section 4.12 Position comparison
between master and slave and section 4.7 Electronic gear unit between
physical master and slave.
Revolutions, degrees or millimetres are used as units for the X-axis of the cam
disc.
Master period
Length of the X-axis of a cam disc. For mechanical cam discs, the period was
usually specified with 0°…360°. See section 4.8 Basic parameters for a cam
disc.
Master start position
See section 4.8 Basic parameters for a cam disc.
Cam, trip cam
See section 4.10 Cam switch.
CAM-IN
See section 4.12.3 CAM-IN.
Modulo
See section 4.6 Modulo positioning.
Slave, subsequent drive
See section 4.1 Fundamentals.
Setpoint value position
slave, Y-value of the
cam disc
The position at which a slave with active cam disc should stand, dependent on
a master position. Units: Revolutions, degrees or millimetres.
Data points, nodes, grid
points, design points
There are 2 types of data points (also called nodes): the design points that the
user creates in the displacement plan editor by mouse click and the grid points
that are automatically created during rasterisation of the curve. See section
4.9.3 Rasterisation of the curve.
Motion law
Mathematical formula used to calculate a course of the curve. See section
4.9.5.
Dwell
Standstill of a slave drive, see section 4.9.5.
Straight line
Section with constant speed, see section 4.9.7.
Jerk
The jerk is the third derivative of the path by time. It represents the change in
acceleration dependent on the time.
Ping
The ping is the fourth derivative of the path by time. It represents the change
in the jerk dependent on the time.
Table 1.3 Terms

Festo CMMP-AS Specifications

General

Brand	Festo
Model	CMMP-AS
Category	Controller
Language	English