| 摘要 |
PURPOSE:To simplify the system, by executing an objective function only, and enabling to execute a test program only when a switch turns on. CONSTITUTION:An objective processing of a function program C is realized with function units F1 and F2 and tests T1 and T2 for each function unit can be excuted at the same time. In such a program construction, a number of a test instruction switch and a test function to be executed with the instruction of the switch are corresponded with each other and while the function program C is being executed, whether or not the test instruction for the function units F1 and F2 to be executed just after exists is discriminated and when the test instruction is at on-state, this test is executed. |
