| 摘要 |
PURPOSE:To eliminate a control of a program module and a correction of an address chart, by securing automatic addition/deletion of a program module and renewal of an address chart after turning on the power source of a switchboard. CONSTITUTION:After a make of the power of a swithcboard, the read-only memory element 200 is scanned, and the program modules 211-213 are discriminated from the discrimination codes of the headers 201-203 stored in the element 200. These discriminated codes are written into the head address storing columns 231-233 of program modules in the program module address chart 220 of the modules 211- 213. Then an addition/deletion of modules 211-213 plus an alteration of address are carried based on the chart 220 containing the program module discrimination code storing columns 221-223 plus columns 231-233 and by only an insertion/ removal of the element 200. As a result, a control of modules 211-213 and a correction of the address chart 220 are eliminated to facilitate an easy maintenance. |
