Hardware Block Diagram, Motherboard Description | Varec 8315 Series

Hardware	TankGate Interface

2.1Hardware Block Diagram

A TankGate hardware functional block diagram is shown below. This diagram shows the relationship between major subsystems and components in the TankGate.

Figure 2-2: TankGate functional block diagram

Tank Gauge

Interface Circuitry

NOVRAM 128 K

PROM 256 k

Serial 1

uP

Serial 0

COM 1

RS-232/RS-485

COM 0

RS-232

The heart of the TankGate is an Intel 80C188EB microprocessor operating at 18.432 MHz. Designed specifically for real-time embedded applications, the µP includes timer/ counters, an interrupt controller, and chip-select circuitry. It also includes 2 serial channels that are designated as COM0 and COM1.

2.2Motherboard Description

The motherboard description is broken into three sections. Each section identifies the location of the components on the motherboard. When necessary, a brief description of the component is provided. These sections are listed below:

•Power Supply

•Switches and Indicators

6	Installation and Operations Manual

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Varec 8315 Series manual Hardware Block Diagram, Motherboard Description

Contents

Installation Operations Manual Page Copyright Disclaimer of Warranties Safety Precaution Definitions Safety Precautions Installation Using ViewRTUTroubleshooting and maintenance Overview Contents System Information SYS Using ViewRTU Troubleshooting Versions FeaturesApplications Specifications System Design Power SupplyPower consumption Operating temperature Humidity Storage temperatureMechanical Construction Overview TankGate Interface Hardware Hardware Block Diagram Motherboard Description TankGate motherboard Unit AC Input Power terminal block J2 Field Power Vfield terminal block J3Auxiliary DC Output Power terminal block J8 Surge Protection Surge Gnd terminal block J4 AC Power Fuses F1,F2 Field Voltage Selection Jumper W3 Reset push-button SW3 Switches and IndicatorsHard Reset Communications 3.1 COM0 J7 3.4 COM1 Hardware Handshaking Switch SW1 3.3 COM1 RS232/RS-485 Selection Switch SW23.2 COM1 RS-232/RS-485 J5 Communica Hardware SW2 Set Tion Physical Handshak Ting Layer Ing TankGate Communications Cable With RTS / CTS RS-232J6 8315 L&J Tankway Interface Module Description Model 8315 TankGate ID DIP Switch SW1 LED Indicators D1-D6 External Power Connector +48V J2 Surge/Shield Ground Connector J4 Field Wiring terminal block J3 Connect the field wiring 8315 L&J Tankway Interface Module TankGate Interface Automatic Fault Recovery Software Features Real-Time / Multitasking ExecutiveReal-Time Clock Protocols Data Scanning TaskDatabase Manager System Tasks TankGate Software Blocks TankGate 8315 Software Blocks Database Organization Point FormatParameter Description Parameter Classes Common Parameters Parameter Data FormatsData Format Description PntCheckSum Parameter PntStatus ParameterElapse Parameter Value Parameter Gathering Point Data Standard Request-Response FormatChange of State Format Change of State-Related Parameters Deadband Modbus Communications Modbus Slave Function Code Description Comments Fixed Modbus MapAddress Type Number Parameter Data Type Gwblk method 8315 L&J Tankway Software Description TankGate Interface Data Address Parameter Comments Configuration Parameters Function Clock CLKParameters Dynamic Parameters Function Configuration Function Parameters Communications COM Application Dynamic Function Parameters Floating Point Register FpregReal 4 bytes value Emulator EMU API Byte value indicating status of point Values are Configuration Parame Function Ters Current CommandEMU Gateway Emugw Hex representation of the request sent by the host Displays the tank number of the currently selected tank Gauging Systems Inc. Model 2000 Interface GS2000 Last message. The maximum is 255 seconds. The default is Raw2 Gateway Block Gwblk Byte value indicating status of point Values are No error CRC-16 Checksum of points static Configuration ParametersSize Parameter Addr1 is the Data Address and PntRef1 is the corresponding Integer Register Ireg Integer 2 bytes value Modbus Gateway Modgw Current request message, displayed in hex format Current command. Values include Scaler Point Scaler Dynamic Parame Function TersOutput value for the Scaler point Value = Ax + By + Cz + K Value parameter converted to Integer format System Information SYS 17 L&J MCG1000 Tank Gauge LJ1000 PntStatus will be set to indicate the failure Application 18 L&J MCG1500 Tank Gauge LJ1500 Task on the Motherboard determines that the Model 8315 has 8315 L&J Tankway Software Description TankGate Interface 19 L&J MCG2000 Tank Gauge LJ2000 Enables the watchdog task on the Motherboard. The watchdog 8300 Command currently being sent to the gauge Number of gauge polls since last resetNumber of gauge polls which resulted in an error 20 L&J Scanner Ljscan Out 8315 L&J Tankway Software Description TankGate Interface General Safety Guidelines Installation Safety Guidelines Installation Mounting the TankGate Mounting the TankGate inside the enclosure Wiring Up Power Installing CommunicationsMounting the Enclosure Select the Unit address Power-Up RS-485 CommunicationsInitial system verification Establishing Host Communications Installation TankGate Interface Installing ViewRTU OverviewSystem Requirements Executing ViewRTU ViewRTU Version Selection dialog ViewRTU Menu Bar ViewRTU windowFile Menu Point Menu Edit Select Point to Add dialog boxEdit Point selection dialog Delete Edit Point dialogPoint deletion dialog Download Database to RTU Config MenuUpload Database from TankGate To enter the password Creating a Password Changing the Password Changing the PasswordPC Setup Communications Menu Port Communications Setup dialog Status Connect Options MenuTankGate search dialog Convert Configuration Files Convert ViewRTU versions dialogExport All Import All Using ViewRTU Help Menu Configuring Single Points Edit Point Window Push-buttons Edit Digital Point dialogMinimize Minimizing the Edit Point Window ConnectionsNext Previous To modify a Value UploadTo modify a value Edit point parameter value dialog Configuring Multiple Points To modify a ReferenceEdit point parameter reference dialog Adding Multiple Points Spreadsheet Mode Adding Multiple Points Point Menu Edit MenuCopy Paste Set Value Paste & DnldSet Value with Auto Increment Import Options MenuExport Hide Row/Col ViewParameter Type Description Creating and Editing Connections Unhide All Point Connections Window Displaying the Point Connections windowTo create a Connection Using ViewRTU TankGate Interface Run indicator Indicator Condition Using the TankGate Push-buttons Communications indicatorLED Displays under Abnormal Conditions 1.3 TXD/RXD LEDs Performing a Hard Reset Press the Reset button Set the ID DIP switch to the desired addresses Maintenance Replacing a defective component or module Troubleshooting TankGate Interface 102 Ordering Structure Remote Terminal Unit TankGate Ordering Structure Nema 4 Enclosure Modbus Map Value12 Fpreg 3034 3094 8300 Your official representative Your offical representative