| 摘要 |
PURPOSE:To cope flexibly with the extension of facilities by storing programs to be added in a part excepting the storing areas of existing programs and rewriting the end instruction of the program so that the programs can be added without stopping a system working. CONSTITUTION:When an additional program is supplied from a key input part 4, an arithmetic control part 8 stores the additional program in a part excepting the areas storing the existing programs. Meanwhile the existing programs are protected to undergo operations continuously. The grammatical checking is carried out through the existing programs and the additional program with operations carried out through the part 4 after the additional program is stored. An error if detected is displayed through a display part 3. Meanwhile the arithmetic processing is continued. When no error is detected, the end instruction of the existing program is rewritten into an MOP instruction for the first time and included within the control range of the additional program to undergo the control according to a new program.
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