U203-A Display

U203-A Display

Features:

6 digits volume,6 digits sales,4 digits price per unit

Big LCD screen and bright backlight

running normally on the condition of -40 C to 55 C

Current:500mA

Weight:300g

100% Factory Tested.

acklist, etc. Once found something wrong, it will obtain latest data from Center controller. Anti-low temperature The minimum limitation of working temperature is �0℃on general fuel dispenser. But on IC card fuel dispenser,�0�due to employ temperature control device. Turn on the device when necessary. Apart from the above functions IC card fuel dispenser should be provided with these traits such as explosion-proof electric safety, anti-dust, anti-interference, high applicability of power supply, high reliability, low ratio of failure, convenient for combination and expansion. Article IV Fuel dispenser and reader working flow Refueling process Under normal situation, filling process should be like this: When power supply is connected, the whole system begins to initiate. As CPU get open command (nozzle has switched on) motor is startup; small flux solenoid valve switch on, oil flowing out of nozzle; CPU calculates volume filled according to pulse transmitted by sensor; at same time, large flux solenoid valve is open, being large filling state. Metering circuit counts paid volume and money on basis of pulse sign transmitted by flow sensor, then transmit these data and unit price into CPU that control the display of current filing. Metering CPU, if in fuel dispenser r fuel dispenser andomly filing, will switch off solenoid valve and motor to end filing when receive stop sign (nozzle has switched off). If in presetting filing process, metering CPU will firstly close large flux solenoid valve when paid volume approachi fuel dispenser ng to presetting volume (100ml~~300ml), small flux solenoid valve being open until paid volume is equivalent to presetting volume. Finally, current filing information such as filled volume, money and unit price (PPU) is transmitted into CPU and display on screen. The proportion of large flux to small flux is 10 to 1. The knowledge of fuel dispenser’s normal working procedure is of importance to judge trouble and failure. Reader flow chart of main programme Diagram 3-27: Filling operation flow

the Tanks featuring in this diagram are not configured via the Dispenser　　 Application Protocol.　　FP31_2.23 IFSF - STANDARD FORECOURT PROTOCOL March 2006　　 DISPENSER APPLICATION　　Page: 132　　5 Implementation Guidelines Recommendations　　This section gives guidelines recommendation for implementations of the IFSF Dispenser　　Application Protocol.　　5.1 Handling after a Device Master ResetCold Start or Initial Start-up　　After a master reset cold start initial start-up or discovery that the device s configuration is　　corrupted the dispenser should:　　 Initialise the Communication Specification s Heartbeat_Interval to 10 seconds.　　 Start generating Heartbeat messages with a Device_Status indicating that configuration is　　 required.　　 Reset the Communication Specification s Recipient Address Table.　　 Clear out all current historic transactions and initialise all other fields.　　 Where a default value exists for a Data_Id the dispenser should set up the Data_Id s value　　 accordingly.　　5.2 Handling After a Reset or Power Off　　After a master Reset or Power Off of the dispenser the device shou fuel dispenser l fuel dispenser d:　　 Send a Configuration Needed heartbeat since it cannot know if it has the correct prices.　　 Do not clear the Communication Specification s Recipient Address Table .　　 Do not clear current historic transactions. fuel dispenser 　　 Do not unlock locked transactions.　　 Do not reset Data_Id s to their default values.　　March 2006 IFSF - STANDARD FORECOURT PROTOCOL FP31_2.23　　 DISPENSER APPLICATION　　 Page: 133　　5.3 Dispenser Behaviour after an Acknowledgement of a Command　　When a

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