| 摘要 |
PURPOSE: An apparatus for inspecting a safety program of a PLC is provided to help a user to correct an error directly by allowing a user to monitor an operation state of a safety program. CONSTITUTION: An apparatus for inspecting a safety program of a PLC is composed of a safety switch(10), a safety sensor(12), a PLC(14), and a display unit. A safety switch is pushed by a user presses in an emergency, and the safety sensor detect whether a user is in a danger area or not. The PLC executes the safety program by a key which is pushed by the user, and the PLC carries out a safety measure corresponding to each signal provided by the safety switch and the safety sensor. The display unit marks the corresponding safety measure by receiving the indication signal corresponding to the safety measure from the PLC.
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