| 摘要 |
PURPOSE:To make it possible to change securely a coefficient in online mode by checking a coefficient value transferred to a buffer memory in the free time of the control task of a control computer and then by supplying a new coefficient of a nonvolatile memory to the computer when the value is judged to be just. CONSTITUTION:While the transfer of a coefficient value from nonvolatile memory 20 to buffer memory 30 is inhibited, a control task is continued by a coefficient value stored in memory 30 and from coefficient setting board 10, a coefficient change is made in memory 20 to transfer this value to buffer 40. The propriety of the coefficient value transferred to memory 40 in the free time of the control task that control computer 60 carries on is checked and only when it is judged to be just, a new coefficient value set in memory 20 is supplied to computer 60 via memory 30 to perform the control task by the new coefficient value. Consequently, the coefficient change of computer 60 can accurately be performed without interrupting the control operation. |
