Varec 4000 manual Tank Gauge Transmitter

Page 8

Tank Gauge Transmitter

5.1.1 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.1.2 Physical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.1.3 Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.1.4 Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.2.1 Explosion Proof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.2.2 Intrinsic Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6 Order Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7 Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7.2 CPU Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7.3 Status Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.4 ATTI Communications Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.5 Host Communications Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.6 Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7.6.1 Back-up Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.6.2 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7.7 Encoder Battery Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7.8 Temperature Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7.9 Host Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7.10 Mark/Space Host Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 7.11 Modbus Support over Mark/Space Host Interface . . . . . . . . . . . . . . . . . . . . 41 7.12 Compatibility with Varec Tank Polling Unit . . . . . . . . . . . . . . . . . . . . . . . . . 41

8 ATT Family of Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1 Model 4040 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.2 Model 4050 Digital Input/Output Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

8.2.1 Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

8.2.2 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

8.2.3 Relay Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9 Modbus Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.2 Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.5 Integer Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.5.1 Integer Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

9.5.3 Character Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.5.5 Packed Bit Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

9.6.1 Floating-Point Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

9.6.2 The Two 16-bit Registers Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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Installation and Operations Manual

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Contents Installation Operations Manual Page Copyright Disclaimer of Warranties Safety Precaution Definitions Safety Precautions Tank Gauge Transmitter Introduction Tank Gauge Transmitter Glossary Tank Gauge Transmitter Viii Using This Manual IntroductionConstruction ConfigurationOperation Installation Mounting the Equipment Part Number Gauge Adapter KitWiring ATT WiringWiring Preparation Connecting Input PowerConnecting Host Communication Terminal Block One TB1 Terminal Block Two TB2ATT EIA485 Wiring Typical EIA485 WiringTypical EIA485 System Wiring ATT Mark/Space Wiring Typical Mark/Space Field WiringConnecting the RTD Connecting the Handheld TerminalWiring Completion Installation CheckoutConfiguration Configuration Parameters1200 Hand Held Terminal Function Key DescriptionTerminal Mode Configuration Terminal Mode Operation 1200 Hand Held TerminalMenu Operation Main Menu Main Menu DescriptionSummary Menu Summary Menu DescriptionConfiguration Menu Configuration Menu DescriptionHost Menu Host Menu DescriptionQuick Setup Host Configuration Imperial Fractional 1900 Quick Setup DefaultsGeneral Configuration Imperial Decimal 1900 Quick Setup Defaults 3 0-20 Meter 1900 Quick Setup Defaults 4 0-30 Meter 1900 Quick Setup Defaults Imperial Fractional 1800 Series Transmitter Quick Setup Imperial Decimal 1800 Series Transmitter Quick Setup7 0-20 Meters 1800 Series Transmitter Quick Setup 8 0-30 Meters 1800 Series Transmitter Quick SetupImperial Modbus Quick Setup Defaults Metric Modbus Quick Setup Defaults Battery Replacement Maintenance and TroubleshootingMaintenance Error Message Description TroubleshootingATT Error Status Conditions Status Condition Description ATT Configuration Error CheckingATT Status Conditions Model 1200 Error Messages Host Communication Loopback TestsSpecifications Specifications and Physical CharacteristicsInput Power EnvironmentalLevel Measurement Safety Agency Approvals Intrinsic SafetyExplosion Proof Agency Acronym RequirementAssembly/Component Part Number Major System Assemblies and ComponentsOrder Codes CommunicationsOrder Codes Theory of Operation CPU BoardBack-up Battery Status Inputs and OutputsAtti Communications Port Host Communications InterfacesHost Communication Encoder Battery BackupTemperature Measurement Number Exception Mark/Space Host InterfaceFunction Number Modbus Support over Mark/Space Host Interface Compatibility with Varec Tank Polling UnitTheory of Operation ATT Family of Products Model 4040 Display UnitRelay Specifications Model 4050 Digital Input/Output UnitDigital Outputs Digital InputsImplementation Modbus ImplementationIntroduction Modbus Implementation Term Definition Functions and Data FormatsInteger Registers ATT Response Integer DataHost Request Character Data Coded Data Packed Bit DataFloating-Point Registers Floating-Point DataTwo 16-bit Registers Format Floating Point DataOne 32-bit Register Format Status Bits Status Bit DataException Responses Exception Response ReasonHardware Implementation Data Out of RangeLoopback Test Integer Register Map Register Number Type DescriptionRegister Number Sw Ver0-1 Noise Reject Type Floating Point Register Map Status Bit Register MapModbus Implementation Optional Interfaces 10.1 4000TIFMO10.2 4000GEFMO 10.3 4000LJFMO10.5 4000WBFMO 10.6 4000GMFMOGlossary Adv Hi LevelDband TSU Tank Gauge Transmitter 4000 Your official representative Your offical representative
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