| 摘要 |
PURPOSE:To ensure smooth execution of the control work despite a fault of an indoor sales data input/output device, by providing both a storage part and an oil feeder control function also to an outdoor sales data input/output device. CONSTITUTION:An oil feeder can feed the oil after reading a card by a card reader 4, pushing a feed selection button 6 and removing a nozzle valve from a nozzle hook even in case an indoor sales data input/output device B has a fault as long as an outdoor sales data input/output device A is nondefective. The data obtained during the feed of oil is stored successively in a sales order storage area 3a at a storage part 3 of the device A as well as in an item-based storage area 3b. The oil feeders are all controlled by the device A only. Furthermore the sales data is stored in the part 3 of the device A in the same way also with the sales of articles excepting oil. Thus all data are processed only by the device A. |
