| 摘要 |
PURPOSE:To easily monitor a programmable sequence controller, by collectively displaying the ON-OFF conditions of each element of a series of group instructions constituting one output instruction that is, power-flow information. CONSTITUTION:When output instructions such as instructions Y100 are called by means of a key input means and a group of programs related to the instructions Y100 are set so that the programs be monitored, a series of group instructions connected to the output instructions Y100 among program instructions memorized to a program memory, instructions regarding X10-X23 in the diagram, are extracted, and housed to a group information memory. Meanwhile, the ON-OFF conditions of each instruction element are read, and housed to a PF information memory. The contents of the group information memory and the PF information memory are processed by means of a computing circuit, and the ON-OFF conditions of each element are displayed on a ladder diagram shown in the diagram. |
