A Position type is at state 1 when the position of the is between the 2 thresholds. The 2 thresholds, low threshold X1 and high threshold X2 must be defined (X1 and X2 both between 0 and the number of pulses/). X1 can be greater than the value of X2. The cam is then active between two cycles.
One type of activation from the 3 suggested: forward/reverse, forward and reverse, must be selected.
NOTE: The confirmation condition must be at state 1 for the cam to be able to change to state 1.
Operation of a cam which is active in forward and reverse directions
This table describes the performance of a cam that is active in forward and reverse directions.
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Description
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Illustration
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If the movement is forward, the cam changes to 1 when threshold X1 is crossed and returns to 0 when threshold X2 is crossed.
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If the movement is reversed, the cam changes to 1 when threshold X2 is crossed and returns to 0 when threshold X1 is crossed.
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If the movement is:
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forward (without crossing threshold X2), the cam changes to 1 when threshold X1 is crossed.
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then reverse, the cam returns to 0 when threshold X1 is crossed
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If the movement is:
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reverse (without crossing threshold X1), the cam changes to 1 when threshold X2 is crossed
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then forward, the cam returns to 0 when threshold X2 is crossed
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Operation of a cam which is active in the forward direction
This table describes the performance of a cam that is active in the forward direction.
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Description
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Illustration
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If the movement is forward, the cam changes to 1 when threshold X1 is crossed and returns to 0 when threshold X2 is crossed
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If the movement is reverse, the cam remains at 0.
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If the movement is:
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forward (without crossing threshold X2), the cam changes to 1 when threshold X1 is crossed
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then reverse, the cam returns to 0 as soon as the direction of movement changes.
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If the movement is:
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reverse, the cam remains at 0
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then forward, the cam returns to 1 when threshold X2 is crossed.
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Operation of a cam that is active in the reverse direction
This table describes the performance of a cam that is active in the reverse directions.
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Description
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Illustration
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If the movement is forward, the cam remains at 0.
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If the movement is reverse, the cam changes to 1 when threshold X2 is crossed and returns to 0 when threshold X1 is crossed
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If the movement is:
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forward, the cam remains at 0
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then reverse, the cam returns to 1 until threshold X1 is crossed.
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If the movement is:
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reverse, the cam changes to 1 when threshold X2 is crossed
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then forward, the cam returns to 0 as soon as the direction of movement changes.
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Threshold X1 can have a value greater than X2 if the cam is active either side of value 0, between:
