| 摘要 |
PROBLEM TO BE SOLVED: To make it sure and easy to generate a software sequence provided with an annunciator function by preparing an annunciator instruction for a ladder diagram, making the annunciator instruction have block constitution, and actualizing its function. SOLUTION: The programmable controller consists of a CPU 11, a memory 12, an input/output part 13, and a power source 14 and for software constitution, a user program and data are prepared in the memory 12 in addition to OS; and this program is constituted into a software sequence described with the ladder diagram. To actualize the annunciator function in the software sequence by the ladder diagram, the annunciator instruction is prepared for the ladder diagram and has the command block constitution to actualize its function. The annunciator function is actualized by specifying conditions, etc., and the trouble to constitute the function is saved to reduce programming misses. |
