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Omron V400-H111 FCS Calculation Method, Calculation Example for Sending FCS, Header Footer

Models: V400-H111

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Appendices

FCS Calculation Method

■FCS Calculation Method

The FCS (Frame Check Sequence) is the result of taking the XOR for each byte between the header and footer (8 bits) and converting it to 2 characters of ASCII.

The FCS can be attached to output data to improve the reliability of communications. Each time data is received, the host calculates the FCS and checks it against the FCS attached to the sent data so that the send data can be checked for errors.

■Calculation Example for Sending FCS

Sample read data: ABCDEFG

The details of the read data and calculation method are as follows:

•Read data

Header Footer

Read data

•Calculation method

Read data		ASCII

Conversion to

ASCII:

FCS

Conversion to hexadecimal values

Hexadecimal

Appendices FCS Calculation

Obtaining the exclusive OR:

Conversion to

ASCII:

FCS data: 40

Method

V400-H111/211

User’s Manual

85

Image 86

Omron V400-H111 user manual FCS Calculation Method, Calculation Example for Sending FCS, Header Footer, FCS data

Contents

USER’S Manual V400-H111/211 Read and Understand this Document Performance Data Alert Statements in this Manual Meanings of Signal WordsMeanings of Alert Symbols Power Supply and Wiring Precautions Precautions for Safe UseInstallation Environment Precautions Other PrecautionsPrecautions for Correct Use How to Use This Manual FormatVisual Aids Contents System Settings Startup Reading 2D Code Outputting Results FunctionsSection Product Overview Features Readable CodesLiquid Crystal Display Zoom Lens ManualDual System Lighting Data Conversion on Display Memory Card SlotUseful Functions Data AccumulationOperation Overview Installation and Connections p.17System Settings Reading 2D CodeOperation Overview V400-H111/211 Section Installation and Connections Basic System Configuration Basic system configuration is shown in the following diagramComponent Names and Functions Connecting a Personal Computer V400-W21-2M/5M Cable CableConnecting a Personal Computer V400-W22-2M/5M Cable Connecting a Programmable Controller V400-W20-2M/5M Cable Remove the cover from the Code Reader Connecting Cables to the Handheld 2D Code ReaderAttach the provided ferrite cores to the cable Connect the cable Cable Disconnecting the Cable from the Handheld 2D Code Reader Cable Remove the cable Connecting the Cable to the Host DeviceRemoving the Cable from the Host Device Recommended Power Supply Power SupplyConnecting the Power Supply V400-W21-2M/5M, V400-W20-2M/5M Connection MethodConnecting the AC Adaptor V400-W22-2M/5M Connect the cable and AC adaptor as shown belowContactor Optional Mounting ProcedureRemoval Procedure Loosen the four screws to detach the contactorOpen the Memory Card slot cover Memory CardsInserting the Memory Card Close the Memory Card slot coverRemoving Memory Cards Push the Memory Card in gently until a click is heardMemo Section Reading 2D Code Startup Turn on the power and start the Handheld 2D Code ReaderBasic Operation Outputting ResultsStartup BuzzerTrigger Buttons Trigger ModeLevel Trigger Factory setting Zoom LeverNormal Outputting ResultsMonitor Description This area displays images taken by the CameraMode C Mode aMode B Read data is output in the following format LED IndicatorsOutput for Unsuccessful Readings Functions SleepSection System Settings Backing Up Data Using the LCD monitor Creating the Setting FilesOverview Uploading DataCreating Setting Files Next page, to switch between Making Settings on the Main BodyBasic Operation for Setting Mode Making Settings on the Main Body V400-H111/211 Select Setup Starting Setting Mode Setup ScreenStart setting mode Setup window structureDefault settings are indicated with an asterisk Select Communication in the Setup windowChange the setting Changing Communication ConditionsExit setting mode Exit communication settingSave the setting data Setting Functions Select Function in the Setup windowExit function setting Starting Setting Mode Uploading from the Memory CardSelect the data setting file Uploading Setting Data to the 2D Code ReaderSelect Upload Settings in the menu window Uploading from the Memory Card V400-H111/211 Select Backup Settings in the menu window Backing Up 2D Code Reader DataRestoring the Factory Setting Data Return the settings to the factory settingsInstalling the 2DCR Configear Click the OK button Click the buttonClick the Continue button Click the OK buttonCommunicating Using 2DCR Configear Communication SettingFile Setting ReaderMenu EditDisplay Form Direct Command InputButtons Status DisplayModelV Creating Setting Files Using the 2DCR ConfigearSaves the created data setting file OpenCommunication Settings Function Settings Level Trigger * or AlternateSection System Settings Create the CSV file for the display Conversion function Setting MethodData Conversion on Display Click the Import button Click 1. New RegistSelect the desired start position and number of bytes Enter the desired name Click the OK button Select on in Data Conversion on Display fieldSwapping the order of the selected items Deleting Items and Changing Item OrderDeleting the selected items Saving Save the settingsExit creation of setting data file Sending the Setting File to the 2D Code Reader Click the ConnectS buttonSelect the desired file and click the Open button Select Setting Reader Send Setting from the menuExit the 2DCR Configear Memo Section Troubleshooting Section Troubleshooting Appendices Inspection MaintenanceHandling the Handheld 2D Code Reader V400-H111/211 Specifications and DimensionsHandheld 2D Code Reader Appendices Specifications and Dimensions V400-W20-5M/V400-W21-5M CableV400-W20-2M/V400-W21-2M V400-W22-2M V400-W22-5MV400-AC2 ContactorAC adapter V600-A22Ascii Table Calculation Example for Sending FCS FCS Calculation MethodFCS Calculation Method Header FooterCalculation Programming Example for Sending FCS FCS Check Subroutine Example for Received DataDataMatrix Following diagram, the symbol size is 12 ⋅Data Capacity Tables DataMatrix ECC200QR Code Model Following diagram, the symbol size is 21 ⋅ 21 VersionQR Code Appendices Data Capacity Tables V400-H111/211 Memo Revision History Cat. No. Z228-E1-01V400-H111/211