| 摘要 |
PURPOSE:To enable one to monitor a sequence program even though the program is modified by skipping an invalid instruction and displaying a program of the destination address in the case of a jump instruction. CONSTITUTION:When the monitor key of mode key 20a is pressed and the head address is specified by means of the numeric key 20b, the sequence program is read by the program reader 25 from the memory 10. The program reader 25 skips an invalid instruction in the sequence program. For a jump instruction, it writes a program given by the memory address, which is commanded by the destination address, in the buffer memory 26. The content written in the buffer memory 26 is displayed on the CRT. |
