| 摘要 |
PROBLEM TO BE SOLVED: To describe and execute a series of loop control, by a ladder program, which includes an input process, a control calculation process, and an output process.SOLUTION: A control controller 10 includes a sequence processor 1, a calculation processor 2, and a memory 3. The memory includes a ladder program 4 and a loop control program 6. The ladder program is constituted by combination of an instruction and an operand. The sequence processor sequentially reads the ladder program. If an instruction of the ladder program is a sequence instruction, the sequence processor executes the sequence instruction. If the instruction of the ladder program is a loop instruction, the calculation processor executes a loop control program. The loop instruction includes a loop instruction operand which can define at least an input process, a control calculation process, and an output process. |
