| 摘要 |
PURPOSE:To prevent a failure of check or the like due to artificial miss and to reduce the number of workers by surely and easily checking the digital output signal of a controller. CONSTITUTION:The output signal of the controller where a relay board is connected to a DO board consisting of plural DO ports which output digital signals in accordance with the control instruction of a CPU is checked by a check device 21. This check device 21 inputs the check instruction inputted from a keyboard 41 to a control part 42 and outputs a check signal generation instruction to the controller and designates addresses for DO ports of a feedback signal storage part 43 correspondingly to DO ports. The signal outputted from the relay board is stored in the feedback signal storage part 43 through a feedback signal input part 44 and is checked by a signal check part 45. The check result is stored in a check result storage device 46 and is displayed on a display device 47. |
