| 摘要 |
PROBLEM TO BE SOLVED: To shorten the time required for debugging. SOLUTION: This debugging tool 10 is communicably connected to a PLC 11 for performing processing based on a command. In this case, the PLC 11 is provided with a reply 112, etc., for returning the processing result to the debugging tool 10 as a response, besides the debugging tool 10 is provided with a transmission part 101 for transmitting the command to the PLC 11 and a display part 103 for program display, etc. When processing can not be executed because of a grammatical error on the program by the PLC 11 based on the command of execution start from the debugging tool 10, the debugging tool 10 is constituted so as to automatically display a program including the grammatical error generating portion in the program on the display part 103 based on a grammatical error generation address provided from the PLC 11.
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