Programmable controller for controlling an output state

A programmable controller for controlling an output state based on position indicated from a position transducer, comprising:

• an interface to the position transducer that converts the position transducer signals into a change in position;
• a storage means for storing the position indicated from the position transducer;
• a storage means for storing the net forward position;
• comparison means for comparing the stored value of the net forward position and the stored value of the position indicated from the position transducer;
• logic means for adding or subtracting the change in position to or from the position indicated from the position transducer;
• logic means for updating the storage means of the position indicated from the position transducer with the result of the addition or subtraction;
• and
• logic means for updating the storage means of the net forward position with the result of the addition when the stored value of the net forward position and the stored value of the position indicated from the position transducer are equal and the transducer interface indicates a forward movement.

A programmable controller having a programmable processor, the controller for controlling an output state based on position indicated from a position transducer, comprising:

• an interface to the position transducer that converts the transducer signals into a change in position;
• means for accumulating the changes in position and storing the resulting position indicated from the position transducer;
• means for storing a selected position value;
• means for comparing the selected position value with the stored position indicated from the position transducer;
• and
• means, responsive to the means for comparing, for signaling the programmable processor when the selected position value is equal to the position indicated from the position transducer.

A programmable controller for controlling an output state based on position indicated from a position transducer, comprising:

• an interface to the position transducer that converts the transducer signals into a change in position;
• a counter that accumulates the change in transducer position;
• means for updating the counter when the transducer signals indicate a change of position;
• means for storing a selected position value;
• means for comparing the selected position value with the stored position indicated from the position transducer;
• delay means for creating a time delay;
• means for storing the value of the time delay,
• means for loading the value of the time delay with a specified delay and beginning the delay when the selected position value matches the position indicated from the position transducer;
• means for changing the output value when the selected position matches the stored position indicated from the position transducer;
• and
• means for changing the output value when the time delay completes.

A programmable controller for controlling an output state based on position indicated from a position transducer, comprising:

• an interface to the position transducer;
• a master-position counter;
• one or more offset-position counters;
• means for defining a maximum position value;
• means for indicating when the master-position counter has reached the maximum position value;
• means for storing one offset value for each offset-position counter;
• and
• means for loading the stored offset value of each offset-position counter when the master-position counter has reached its maximum value.

A programmable controller for controlling an output state during a repetitive operation cycle using generated output signals, comprising:

• a hardware timer for measuring the period of the repetitive operation cycle;
• means for specifying a maximum cycle value;
• and
• compare logic for disabling the output signals when the measured period is greater than the maximum cycle value.

A programmable controller for controlling an output state based on position indicated from a position transducer, comprising:

• an interface to the position transducer that converts the transducer signals into a change in position;
• a counter that accumulates the change in transducer position;
• means for updating the counter when the transducer signals indicate a change of position;
• means for storing a selected position value;
• means for comparing the selected position value with the stored position indicated from the position transducer;
• delay means for creating a positional delay based on change in position;
• means for storing the value of the positional delay,
• means for loading the value of the positional delay with a specified delay and beginning the delay when the selected position value matches the position indicated from the position transducer.