The "Cam Profile" function is performed by channels 25 to 31 of the TSX CSY 84 module. The cam profiles are used by the slave axis groups to follow the master axis according to a points table known as the cam profile.
A cam profile is a 2 column points table:
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a column that defines the position of the master in a slave axis group (usually an imaginary axis),
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a column that defines the position of the slave, associated with the master's position.
The interpolation between 2 consecutive points enables the positions not given by the table to be deduced. The interpolation may be linear or cubic.
The positions of the master must be increasing. For example, they must not go from 360 to 0 degrees. This would correspond to decreasing positions.
The diagram representation of a slave axis controlled by a cam profile is as follows:
The cam can be implemented:
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either by an internal table in the axis control module, as defined by the initial table value and a fixed increment.
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or by an external table to the axis control module (contained in the PLC), defined as an address %KF.
Illustration
If the cam entry corresponds to a value between 2 consecutive points, the slave setpoint is calculated by linear or cubic interpolation (defined at configuration)
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WRITE_CMD,
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READ_STS,
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TRF_RECIPE.
