| 摘要 |
PURPOSE:To simplify a test of an order program, by using each output of two sequence controllers having the same function to each input of the other side of these controllers with each other. CONSTITUTION:When the conduction is secured between (a) and (c) for switch devices 17, 18 and 20, the sequence controllers 11 and 12 have a double structure respectively to ensure the control with no error. When the conduction is secured between (b) and (c) for the switch devices, the controllers 11 and 12 are cut off from input and output devices and then connected to each other in a loop. The control contents of an RAM15 of the controller 12 are changed to a mimic operation program while the contents of the RAM15 of the controller 11 are kept as they are. A mimic working test is possible for an application program by feeding the initial value to the controller 11. |
