| 摘要 |
PROBLEM TO BE SOLVED: To make ladder circuits easily visible and easily understandable by collecting and arranging circuit constitutions in a time series in one point so that commands of a variety PLCs are not dispersedly described when creating the PLC ladder circuits which require complicated processing.SOLUTION: In the creation of PLC ladder circuits which require complicated processing, the circuits in which PLC commands of necessary processing are described are independently created as one stage 35 at the same timing, and the stages 35 are created in a plurality of pieces in a processing order. Circuit allocation numerical values 34 are allocated at tops of the stages 35 which are created in a plurality of pieces, the stages 35 are selected on condition that the numerical values of the circuit allocation numerical values 34 and numerical values which are stored in a stage selecting data memory 32 coincide with each other, and the ladder circuits of the stage 35 are processed. Then, by sequentially changing the numerical values which are stored in the stage selecting data memory 32, the ladder circuits of a plurality of the stages 35 are sequentially processed.SELECTED DRAWING: Figure 6 |
