| 摘要 |
PURPOSE:To prevent the user from being aware of the change of an address to be jumped due to addition/deletion of a jump instruction and to keep corresponding relation to a coding sheet, by controlling the jump instruction by the label number. CONSTITUTION:A controller is provided with a CPU1, an I/O parts 2, a user's memory 3, and an internal memory 4. The internal memroy 4 has an ROM stored with a system program to be executed by the CPu1 and an ROM to be used as a temporary storage area for various variable data and a label number 1 address reference table is prepared in a prescribed area in the RAM. The CPU1 decodes and executes the user's programs stored in the user's memory 3 successively, executes logical operation between the I/O data and successively updates output data to be applied to the I/O parts by the result of logical operation to form the sequence state regulated by the user's program between the I/O data. |
