optimising the resources so as to avoid these blockage situations managing the cmts functioning through the partial allocation of resources and the possibility of multiple movements with distinct extensions and orientations and simultaneously trying to optimise the work station occupation ideally at 100 the cmcs have a buffering capacity inferior to that of cmcs having only one waiting position this configuration has nevertheless the advantage of being able to send transport units to previous work stations i e in the opposite direction to the normal flow of the operating routing thus being able to function without sat and the associated manipulator besides the preferential configurations presented in fig8 9 and 10 there are however a set of others whose usage may occur in a short period of time and whose structure is briefly described since its functioning principle is identical to the two preferential configurations above described in detail two cmcs lines placed side by side so as to function as a circular movement structure two cmcs lines with a cmt central channel instead of the two existing ones in the preferential configuration of fig1 two cmcs lines with two cmt central channels so as to avoid the obligatory presence of an overhead storage system in the preferential configuration of fig8 and 9 two cmcs lines with 3 cmt central channels so as to increase the cadency of the configuration presented in the previous paragraph sidat 39 s management system based on a pc and or a programmable logic controller is based on an information organisation model for which it is defined firstly the operating routing structure necessary to produce a certain article and after that which resources and information are.