TESTING DEVICE FOR PROGRAMMABLE CONTROLLER

PROBLEM TO BE SOLVED: To provide a testing device for programmable controller capable of easily preparing test conditions in a short time without requiring any special knowledge of creating test screen.SOLUTION: The testing device for programmable controller includes a computer for testing which is connected to a test object PLC in which input/output points are allotted with plural bits for each word. In a macro function of excel on the computer, when a command button 24 of an input display cell 23 on a display sheet 21 is turned ON by an excel operation, input signal cell 27 corresponding to the excel data sheet 22 is rewritten by ON, and when any one of output signal cells 28 of the excel data sheet 22 is written with ON, the display of the output display cell 25 of an excel operation display sheet 21 is changed. When ON/OFF of the input signal cell 27 of the excel data sheet 22 is transmitted as one word to the test object PLC, and receiving an output signal of one word from the test object PLC, the ON/OFF of the bit unit is rewritten while allotting to a bit corresponding to the output signal cell 25.