Programmable controller for the mechanism of an industrial truck

摘要

A controller for an auxiliary mechanism of an industrial truck includes a sensor which detects movement of the mechanism and provides signals denoting increments of that movement. A counter receives those signals and thereby provides a count denoting the position of the mechanism along its range of movement. A memory is controllable to provide one of a plurality of stored representations for comparison with the count and a comparator compares the count with a representation made available from the memory to provide a signal for controlling the movement of the mechanism. A keyboard is provided for effecting storage in the memory of representations of different positions along the mechanism's range of movement.