Varec 4000 2.4.6 ATT Mark/Space Wiring

4000 Installation

2.4.6 ATT Mark/Space Wiring

For an ATT using the Mark/Space field communications option, the following additional wiring connections must be

made. (Refer to Input Power Wiring in Section 6 to determine the minimum wire size required.). See Figure 2-6.

• Run two twisted pairs of 18 AWG wire (Mark/Space wires) into the ATT through the conduit entry along with the

48 VDC power wiring.

• Connect the Mark line to terminal 11, M/485-, and the Space line to terminal 12,

S/485+, on the terminal block assembly.

Figure 2-6: Typical Mark/Space Field Wiring

Details of RTU8130 with 8210 expansion

module and ATT termination board wiring

Varec

Model 4000

ATT

External

Power Supply

To Other

4-Wire

Transmitters

in Area 0

Ground shield at RTU8130 ONLY!

Do NOT ground shield at transmitter.

4 Conductor

Cable

18 AWG

Shielded

8203 With 8210

expansion module

Field Junction Box

Contents

Main Page Copyright Trademarks acknowledged Disclaimer of Warranties Limitations of Seller's Liability Terms of Use Page Page 1 Introduction 2 Installation 3 Configuration 4 Maintenance and Troubleshooting 5 Specifications 6 Order Codes 7 Theory of Operation 8 ATT Family of Products 9 Modbus Implementation 10 Optional Interfaces Glossary Page 1 4000 Introduction 1 Introduction 1.1 Using This Manual Figure 1-1: Tank Installation with Model 4000 ATT 1.2 Getting Acquainted with the Advanced Technology Transmitter (ATT) 1.3 Operation 1.4 Configuration 1.5 Construction Figure 1-2: Model 4000 Advanced Technology Transmitter Assembly 2 Installation 2.2 Mounting the Equipment Figure 2-2: ATT Mounting Diagram Page Figure 2-3: ATT Field Terminal Block Wiring 2.4.4 Connecting Host Communication 2.4.5 ATT EIA485 Wiring Figure 2-4: Typical EIA485 Wiring Installation Tank Gauge Transmitter 8 Installation and Operations Manual Figure 2-5: Typical EIA485 System Wiring 2.4.6 ATT Mark/Space Wiring Figure 2-6: Typical Mark/Space Field Wiring 2.5 Connecting the RTD 2.5.1 Connecting the Handheld Terminal 2.5.2 Wiring Completion 2.5.3 Installation Checkout 2.5.4 Installation Checklist 3 Configuration 3.1 Configuration Parameters 3.2 1200 Hand Held Terminal Page Figure 3-3: 1200 Hand Held Terminal 3.3 Terminal Mode Operation 3.4 Menu Operation 3.4.1 Main Menu 3.4.2 Summary Menu 3.4.3 Configuration Menu 3.4.4 Host Menu 3.4.5 Notes on Menu Items 3.5 Quick Setup 3.5.1 Imperial Fractional 1900 Quick Setup Defaults 3.5.2 Imperial Decimal 1900 Quick Setup Defaults 3.5.3 0-20 Meter 1900 Quick Setup Defaults 3.5.4 0-30 Meter 1900 Quick Setup Defaults Page 3.5.9 Imperial Modbus Quick Setup Defaults 3.5.10 Metric Modbus Quick Setup Defaults 4 Maintenance and Troubleshooting 4.1 Maintenance 4.2 Battery Replacement 4.3 Troubleshooting 4.3.1 ATT Error Status Conditions 4.4 ATT Status Conditions 4.5 ATT Configuration Error Checking 4.6 Model 1200 Error Messages 4.7 Host Communication Loopback Tests 5 Specifications 5.1 Specifications and Physical Characteristics 5.1.3 Input Power 5.1.1 Environmental 5.1.2 Physical 5.1.4 Level Measurement 5.2 Safety Agency Approvals 5.2.1 Explosion Proof 5.2.2 Intrinsic Safety 5.3 Major System Assemblies and Components Figure 5-1: ATT Major Assemblies 35 4000 Order Codes 6 Order Codes Page 37 4000 Theory of Operation 7 Theory of Operation 7.1 Overview Figure 7-1: ATT Block Diagram Table 7.2 CPU Board 7.3 Status Inputs and Outputs 7.4 ATTI Communications Port 7.5 Host Communications Interfaces 7.6 Level Measurement 7.6.1 Back-up Battery 7.7 Encoder Battery Backup 7.8 Temperature Measurement 7.9 Host Communication 7.10 Mark/Space Host Interface Page Page 8 ATT Family of Products Figure 8-1: ATT Family of Products 8.1 Model 4040 Display Unit Page 9 Modbus Implementation 9.1 Introduction 9.2 Implementation 9.3 Configuration Table 9-1: Modbus Functions Table 9-2: Modbus Configuration Information 9.4 Functions and Data Formats 9.5 Integer Registers 9.5.1 Integer Data 9.5.2 Integer Data 9.5.3 Character Data 9.5.4 Coded Data Hexadecimal representation 0002 (decimal 2) Level unit table representation: FT-IN-16TH 9.5.5 Packed Bit Data Note! Bit #0 is ON indicating a critical low level Alarm 9.6 Floating-Point Registers 9.6.1 Floating-Point Data 9.6.2 The Two 16-bit Registers Format 9.6.3 Floating Point Data 9.6.4 The One 32-bit Register Format 9.6.5 Floating Point Data 9.6.6 Floating Point Data 9.7 Status Bits 9.7.1 Status Bit Data 9.8 Exception Responses 9.9 Data Out of Range 9.10 Loopback Test 9.11 Hard ware Implementation 9.12 Integer Register Map Page Page Page 9.13 Floating Point Register Map 9.14 Status Bit Register Map Page 10 Optional Interfaces 10.1 4000TIFMO 10.2 4000GEFMO 10.3 4000LJFMO 10.4 4000MXFMO 10.5 4000WBFMO 10.6 4000GMFMO Glossary