U204-A Keypad

U204-A Keypad

Features:

Adopt ITO material, water-proof design

Oil-proof,ultraviolet-ray-proof

Running normally on the condition of -40to+55degree

Gilding bottons shrapnel

Weight:230g

100% Factory Tested.

. Oil in separating chamber fail to flow into low pressure chamber because return valve is jammed due to big floater split and much waste in return valve. Many operations without refueling lead to overflow in exhausting pipe. Fuel without data count Pin installed on the elbow of measurement transducer has broken. Replace new elbow or pin. It has some wrong in count pulse of transducer though axis is still rotated. Inspect wiring of double opticaleletric pulse, main board and chipset. Confirm that whether trouble of short circui fuel dispenser t on wiring board. 11. Although fuel dispenser normally discharge display screen don’t show data. Failure in PPU change Using multimeter examines parameter lock whether open or closed. fuel dispenser Computer of fuel dispenser is on power, but can’t start operation. Firstly inspect keyboard lock’s state, capacitor on wiring board. Measure voltage of power supply (�V, �2 V). Examine switch signal, change when necessary. Inspect boot-strap signal，replace new main board as signal break. Examine power supply wiring if motor stop rotation with signa fuel dispenser l. Abnormal stop in operation Inspect voltage of power supply (�V, �2 V), change the one that low voltage. Lead connection is not fixed. Tight bolt fixing lead. Wire voltage of motor is unstable. Display screen trouble Change display screen with new one. If still don’t displays replace main board of fuel dispenser Keyboard trouble Replace with a new keyboard, if could work there is wrong in previous keyboard. If still don’t work with a new keyboard, trouble would be in mainboard. Computer doesn’t work on power Inspect voltage of power supply (�V, �2 V),replacing broken one. Examine SW signal; if failure replacing optical board. If SW signal is in normal state, replace main board. Date jump in display screen as hold up or put down nozzle One of reason is leakage on pipeline and bottom valve. Randomly prolong or replace non-standard pipe and hose also make this trouble on fuel dispen

is important that there should be no concurrent block cut messages from any one　　 device since the header for a block cut message does not contain a token.　　 MESSAGE HEADER = LNAR LNAO IFSF_MC BL　　 Thus it is not possible to recombine block cut messages correctly if there are　　 concurrent block cut messages from a given device.　　3.4.2 Ambiguity of Response Messages　　 There may be confusion about which particular AnswerAcknowledge response　　 pertains to which o fuel dispenser riginal ReadWrite message. Since some Read messages also　　 receive Acknowledge messages there can only be one sequence of tokens not　　 separate sequences for Reads fuel dispenser and Writes. Hence the maximum number of outstanding　　 messages from a given device should be 32 or less.　　3.4.3 NACK Reads　　 There is a limit to the number of messages which a target device can buffer. In the　　 case of messages overrunning the target device it could NACK any messages beyond　　 its capacity u fuel dispenser sing MS_ACK = 07 (Device busy). The initiator should then wait for　　 approximately 2 seconds and then repeat its message. A NACK read will also occur　　 when it is not possible to read from a database location.　　FP2_1.89 IFSF STANDARD FORECOURT PROTOCOL June 2005　　 COMMUNICATION SPECIFICATION　　Page: 26　　4 IFSF Communication Services　　 This chapter defines the services provided by the communications layer and the way　　 to access to these services. That means the interface between the application (layer 7)　　 and the communication (layer 6).　　4.1 Addressing　　 Each device will be locally able to define its own node address that means: Subnet and　　 Node numbers (S N). Different solutions are possib

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