| 摘要 |
PURPOSE:To provide an indicating controller capable of storing data including data on the way of operation in an EEPROM even when power supply is disconnected on the way of data writing. CONSTITUTION:The indicating controller system is provided with a power supply stop detection signal power supply monitoring circuit 10 for detecting the disconnection of power supply, a backup power supply 20 for supplying operation power for a holding time from the disconnection of power supply, a RAM 30, an EEPROM 40, a parameter management part 50 for allowing parameters stored in respective parameter storing areas of the RAM 30 and the EEPROM 40 to coincide with a changed parameter when an operation parameter or a set-up parameter is changed from the external, and a power supply disconnection backup part 60 for transferring a highly frequent change parameter stored in the RAM 30 and data on the way of operation to the backup storing area of the EEPROM 40 within the holding time when a power supply stop detection signal is outputted from the circuit 10. |
