| 摘要 |
PURPOSE:To enable to troubleshoot the failure in a short time, by erasing the conditional input satisfying the test conditions from the screen and displaying the conditional input not satisfying the test conditions on the screen. CONSTITUTION:In the sequence display unit performing external display through converting the program in a given symbol pattern, a series of sequence program which tests a plurality of conditional inputs relating to ON and OFF of the specific output element is read out from the memory section 11 of the sequence control circuit 10 and converted into a given symbol pattern to perform display in the ladder diagram. In this case, the test result of this conditional input is discriminated with the test result discrimination circuit 22, the input symbol pattern discriminated as the satisfaction of conditions is erased with the control circuit 30 for the display of ladder diagram. Thus, the condition inputs not satisying the conditions can easily be discriminated to troubleshoot the failure in a short time. |
