Varec 8315 Series manual Application

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8315 L&J Tankway Software Description		TankGate Interface


	Configuration	Function
	Parameters

	RespDelay	Time in milliseconds that RTU will delay a response to the Host. The
		default is 50 msec.

	SynchMax	The SynchMax is used by some slave protocols for auto-
		synchronization of the BaudRate. The SynchMax is used to determine if
		the BaudRate is correct. If the SynchMax is zero, then no
		synchronization is attempted.

	DirectPort	The DirectPort is used then the Protocol is set to Direct.

Dynamic Parameters	Function

CommStatus	Coded variable indicating the On-line/Offline status of the COM
	point

State	Current state of the message being sent/received

Command	Current command being processed

Status	Status if the last message

CommErrors	The number of communication errors

NumTrans	The number of transactions

Elapse	Time of the last Change of State

PntCheckSum	CRC-16 Checksum of point's static Configuration Parameters

4.7.2Application

The COM point controls the operation of Host and Slave communications. The Baud Rate, Communications Parameters and Protocol may be changed by assigning values to the appropriate parameter. Each Com port is independent of the other and completely flexible in its use.

For example, the user may configure the system to communicate with a single host redundantly using the same protocol. Alternatively, the TankGate can communicate to different hosts using different protocols, allowing the TankGate to act as a bridge. Other options include assigning one COM point to communicate with a Slave device while communicating to a Host system on the other.

36	Installation and Operations Manual

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Contents Installation Operations Manual Page Copyright Disclaimer of Warranties Safety Precaution Definitions Safety Precautions Troubleshooting and maintenance InstallationUsing ViewRTU OverviewContents System Information SYS Using ViewRTU Troubleshooting Versions FeaturesApplications Power consumption Specifications System DesignPower Supply Operating temperatureHumidity Storage temperatureMechanical Construction Overview TankGate Interface Hardware Hardware Block Diagram Motherboard DescriptionTankGate motherboard Auxiliary DC Output Power terminal block J8 Unit AC Input Power terminal block J2Field Power Vfield terminal block J3 Surge Protection Surge Gnd terminal block J4AC Power Fuses F1,F2 Field Voltage Selection Jumper W3Reset push-button SW3 Switches and IndicatorsHard Reset Communications 3.1 COM0 J73.4 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 IngTankGate Communications Cable With RTS / CTS RS-232J68315 L&J Tankway Interface Module Description Model 8315 TankGateID DIP Switch SW1 LED Indicators D1-D6External Power Connector +48V J2 Surge/Shield Ground Connector J4Field Wiring terminal block J3 Connect the field wiring8315 L&J Tankway Interface Module TankGate Interface Automatic Fault Recovery Software Features Real-Time / Multitasking ExecutiveReal-Time Clock Database Manager ProtocolsData Scanning Task System TasksTankGate Software Blocks TankGate 8315 Software BlocksParameter Description Database OrganizationPoint Format Parameter ClassesCommon Parameters Parameter Data FormatsData Format Description Elapse Parameter PntCheckSum ParameterPntStatus Parameter Value ParameterChange of State Format Gathering Point DataStandard Request-Response Format Change of State-Related ParametersDeadband Modbus Communications Modbus SlaveFunction 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 Parameters Configuration Parameters FunctionClock CLK Dynamic Parameters FunctionConfiguration Function Parameters Communications COMApplication Dynamic Function Parameters Floating Point Register FpregReal 4 bytes value Emulator EMU APIByte value indicating status of point Values are EMU Gateway Emugw Configuration Parame Function TersCurrent Command Hex representation of the request sent by the hostDisplays 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 Size Parameter Byte value indicating status of point Values are No errorCRC-16 Checksum of points static Configuration Parameters Addr1 is the Data Address and PntRef1 is the correspondingInteger Register Ireg Integer 2 bytes valueModbus Gateway Modgw Current request message, displayed in hex formatCurrent command. Values include Output value for the Scaler point Scaler Point ScalerDynamic Parame Function Ters Value = Ax + By + Cz + KValue 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 Number of gauge polls which resulted in an error Command currently being sent to the gaugeNumber of gauge polls since last reset 20 L&J Scanner LjscanOut 8315 L&J Tankway Software Description TankGate Interface General Safety Guidelines Installation Safety GuidelinesInstallation Mounting the TankGate Mounting the TankGate inside the enclosureMounting the Enclosure Wiring Up PowerInstalling Communications Select the Unit addressInitial system verification Power-UpRS-485 Communications Establishing Host CommunicationsInstallation TankGate Interface System Requirements Installing ViewRTUOverview Executing ViewRTUViewRTU 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 PasswordPC Setup Changing the PasswordChanging the Password Communications MenuPort Communications Setup dialog StatusConnect Options MenuTankGate search dialog Export All Convert Configuration FilesConvert ViewRTU versions dialog Import AllUsing ViewRTU Help MenuConfiguring Single Points Edit Point Window Push-buttons Edit Digital Point dialogMinimize Next Minimizing the Edit Point WindowConnections PreviousTo modify a value To modify a ValueUpload Edit point parameter value dialogEdit point parameter reference dialog Configuring Multiple PointsTo modify a Reference Adding Multiple PointsSpreadsheet Mode Adding Multiple PointsCopy Point MenuEdit Menu PasteSet Value Paste & DnldSet Value with Auto Increment Import Options MenuExport Hide Row/Col ViewParameter Type Description Creating and Editing Connections Unhide AllPoint Connections Window Displaying the Point Connections windowTo create a Connection Using ViewRTU TankGate Interface Run indicator Indicator ConditionLED Displays under Abnormal Conditions Using the TankGate Push-buttonsCommunications indicator 1.3 TXD/RXD LEDsPerforming a Hard Reset Press the Reset buttonSet the ID DIP switch to the desired addresses Maintenance Replacing a defective component or moduleTroubleshooting TankGate Interface 102 Ordering Structure Remote Terminal Unit TankGate Ordering Structure Nema 4 EnclosureModbus Map Value12 Fpreg 3034 3094 8300 Your official representative Your offical representative