PROGRAMMABLE DISPLAY DEVICE

摘要

PURPOSE: To collectively execute the maintenance works of a PC and a programmable display device in a terminal equipment for maintenance connected to the programmable display device. CONSTITUTION: When update data is inputted from a terminal equipment 3 for maintenance, a table stored in a memory 1c of a programmable display device 1 is updated; and when a restore instruction is inputted, contents of the table are restored to the state before update. The device and programs of a PC 2 are arbitrarily designated from the terminal equipment 3 for maintenance connected to the programmable display device 1 to execute the read/write processing.