| 摘要 |
PURPOSE:To grasp clearly the process to a trouble to analyze the trouble in a short time by displaying visually successively codes and data stored before the occurrence of the trouble when the trouble occurs. CONSTITUTION:When a CPU 1 detects the trouble of constituting parts of an automatic vending machine like a cam switch to write an error code on a RAM 2,a flag is set in a RAM holding flag register F2 to stop storage of codes and data hereafter. Consequently, the log of processings till detection of he trouble is written in the RAM 2 with codes and data. An input device 10 is provided with a display switch 14, and a visual device 12 like a printer or a display device is connected to an I/O interface 4 by a harness 13, and a CPU 1 displays codes and data stored in the RAM 2 in order when the display switch 14 is turned on.
|
