| 摘要 |
PURPOSE:To easily execute a debug work and a maintenance work, by inputting a desired relay name or address, and displaying only a ladder diagram of sequence logic using the relay concerned or the signal. CONSTITUTION:When a desired relay name or address is keyed in from an MDI, and also a ladder display mode is keyed in, a processing device 301m outputs them to a universal display device 301h, and after that, sends out a sequence program data. A display control part DPC reads out the relay name from a memory MEM, compares it with an input relay name, and if even one coincides, the sequence program data is coverted to picture information and is stored in a refresh memory RFM. After that, the same processing is executed, and in accordance with the picture information stored in the RFM, a picture is generated from a character generator CG, and is displayed on a CRT. |
