CONTROLLER FOR FARM WORKING MACHINE AND IMPLEMENT

摘要

PROBLEM TO BE SOLVED: To make an incorrect control data unusable when receiving a control data from the outside into a controller unit. SOLUTION: This controller is capable of writing a control data transferred through a receiving driver once in a received data memory part by a direct memory access controller(DMAC) receiving a signal for requiring a direct memory access (DMA) from a CPU in a controller unit C2 (S1), then completing the writing of the control data into the received data memory part (DMA transfer) (S1: yes), discriminating whether or not the control data is in use by either one of two buffer memory A part and buffer memory B part by the DMAC (S2), executing the writing of the control data (DMA transfer) from the received data memory part into the buffer memory B part if the control data is in use, e.g. by the buffer memory A part (S3) and using the control data in the other buffer memory A part for the operation control (S4).