Communications Operations of the BHT | Denso BHT-7500W, BHT-7500S

Chapter 3. Communications Operations of the BHT

Chapter 3

Communications Operations of the BHT

This chapter describes the communications operations of the BHT-7500/7500S/7500WÑ the spread-spectrum communication (for BHT-7500S/7500W only), IR communication, RS-232C interface specifications, the basic communications specifications, and the communications protocolsÑfor data transfer with the host computer or other devices.


3.1	Spread-Spectrum Communication (BHT-7500S/7500W only)			124
	3.1.1 Notes for Wireless Operations			124
	3.1.2	RF-Related Parameters		124
3.2	Infrared Communication			126
3.3	RS-232C Interface Specifications			127
	[ 1 ] Interface Connector and Pin Assignment			127
	[ 2 ] Interface Cable Connection			128
3.4	Basic Communications Specifications and Parameters			129
	3.4.1	Basic Communications Specifications		129
	3.4.2	Communications Parameters		131
3.5	Communications Protocols			132
	3.5.1	BHT-protocol		132
	[ 1 ]		Overview	132
	[ 2 ] Control Characters			133
	[ 3 ] Basic Format of Transmission Messages			135
	[ 4 ] Text Format			136
	3.5.2	BHT-Ir Protocol		138
	[ 1 ]		Overview	138
	[ 2 ] Control Characters			139
	[ 3 ] Basic Format of Transmission Messages			141
	[ 4 ] Text Format			142

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Denso BHT-7500W, BHT-7500S user manual Communications Operations of the BHT

Contents

Page Page Preface How this book is organized Technical Terms Used in This Manual Meaning of Symbols Safety Precautions Handling the battery cartridge Handling the CU Basic handling tips Do not Drop me Page Proper Care of the BHT and CU FCC Regulations US and Canada Regulations Xiii Declaration of Conformity For European Union Labeling Safety Precautions Content Overviews Chapter Error Messages 145 Page Chapter Reading Bar Codes Quick Guide Setting the hand strap Using the hand strap Setting and Using the Hand Strap Setting the Backlight Entering Numerical Data Using the Keypad Transferring Data Using radio link BHT-7500S/7500W only Using infrared link Getting Started the BHT System Mode System Configuration BHT System Configuration MS-DOS Host Computer Ir-Transfer Utility E option CU-7000 and RS-232C Interface Cable optionBHT-BASIC Compiler option Ir-Transfer Utility C option Basic Transfer Utility optionSystem Programs User Programs JIS Level 1 and Level 2 Font Files Optical interface port Components and Functions Alphabet input Preparation Setting-up 1 Loading the Battery Cartridge Battery Voltage Level on the Status Indicator Line Battery voltage has lowered Low Battery IndicationPage Set the current date and time 00/01/01 Setting-up 2 Setting the Calendar Clock 1EXECUTE Program 00/01/01 0000 00/04/19 LCD Contrast Adjusting the beeper volume Adjusting the LCD contrastSwitching the beeper & vibrator Battery voltage level Battery Voltage Display When is battery replacement needed? Battery Replacement Notes Set the current date and time 00/01/01 If the BHT is turned off abnormally BHT Turning-off NotesShutdown in progress message Do you want to run Scandisk? Yes 2.No Scandisk when the resume function is enabled If invalid files are found About $$BRKLST.SYS Initializing the BHT System Contact your administrator 2XXX Whole User Area User Area Except Fonts During initialization, the screen shown at left is displayed Plays the screen shown at left for a second Starting System Mode Operating in System Mode Structure of System Mode Testing Setting the remote wakeup parameters Setting the CPU performance ENT Operating in System ModeCalling up the desired set screen Selecting a desired setting Program Execution Detailed Description of the Functions in System Mode Execute Program No File Exists File Downloading Getting Started the BHT and System Mode Download screens Solution If an error occurs during downloading You attempted to download an invalid program file ALL Files UploadingONE File Upload screens If an error occurs during uploading System Environment Setting Setting an execution program Setting the message version Setting the calendar clock STF Setting the special bar-code scanning parametersInvert ITF Digits Setting the communications environments Parameter ConnectorOptical COM Port Communications parameters setting screen Data BIT Parity BIT Selects the timeout length System Mode Setting the interface port Setting the communications protocol type SET ID Defining the functions of the shift key and magic keys Magic keys SET FTP Setting the resume functionSetting the TCP/IP and FTP BHT-7500S/7500W only OFF Setting the TCP/IP Setting the FTP CR/LF Code Property CR/LF Testing EAN-13, UPC-A EAN-8 UPC-E Bar-code reading test Memory test Aging test Beeper scale test Master Communications test Testing the optical interface port Testing the direct-connect interface port LCD and indicator LED tests Checker pattern is reversed Fine checker pattern appears Key entry & beeper test File test SET Ping Testing with Ping BHT-7500S/7500W onlyRUN Ping Count TimeoutData Size Interval Data Size Interval Timeout Count If timeout occurs System Information Upload Downloading/Uploading by FTP BHT-7500S/7500W onlyDownloading by FTP DIR/FILE Uploading by FTP If no file exists when uploading by FTP is selected Run-time messages in downloading/uploading by FTP Reply codes from the FTP server Version RF Menu BHT-7500SID entry screen SET ID BHT-7500S Macid RF version screen WEP KEY RF Menu BHT-7500WRF parameter menu RF Option Ssid ID entry screenClient Name WEP Power SaveAuthenticate RF option screen WEP key definition screen Defining WEP KEY Defining WEP KEY 2 through Setting Transmit KEY Initialize RF RF parameter initialization screen Link status screen Associated Access PointSignal Strength Site Survey menu Channel Link QualityLink Speed File deletion menu Deleting Files Deletion completion screen Download Downloading/Uploading the BHT System Parameter FileDownloading the BHT system parameter file File mismatch Retry? Downloading has failed Uploading the BHT system parameter file Out of memory Setting the Remote Wakeup Setting the CPU Performance Downloading the system message file Downloading/Uploading the System Message File If an error occurs during downloading Downloading has failed Uploading the system message file If an error occurs during uploading Communications Operations of the BHT Domains Spread-Spectrum Communication BHT-7500S/7500W onlyRF-Related Parameters BHT-7500S BHT-7500W Service Set ID SsidWEP Wired Equivalent Privacy Security IDs BHT-BASIC Infrared Communication BHT RS-232C Interface SpecificationsInterface Connector and Pin Assignment Interface Cable Connection Transmission Speed Basic Communications SpecificationsBasic Communications Specifica- tions and Parameters Synchronization Vertical Parity Transmission Code and Bit Order BHT-BASIC Communications Parameters Overview Communications ProtocolsBHT-protocol Transparency Control CharactersTransmission control characters ETX Text control charactersSOH STX Basic Format of Transmission Messages Program Text Format Text Format 10 11 12 13 14 15 16 17 Data Text Format BHT-Ir Protocol DLE NAK DLE EOTDLE ENQ DLE ACK DLE ETX DLE SOHDLE STX 141 142 143 144 Error Messages Low battery indication-Level System ErrorsSystem Program error Calendar clock stopped System Program malfunction Abnormally turned off last Resume data lost Error in System Mode settingsExecution program not selected System administrator to be called System down error When selecting a program file or data file Errors in System Mode Press the C key to return to the System Menu screen Downloading has failed File you attempted to upload is damaged Uploading has failed 156 Handling the CU-7000 Option Functions of the CU-7000 LED indicators Applying Power to the CU-7000 Interface Cable Connection Setting the Transmission Speed of the CU-7000Communicating with the Host Computer Interfacing with the Host Computer Take the BHT off the CU-7001 Charging Operation and LED Indication CU-7000 has an RS-232C interface port Dsub-25S DTE and DCE 166 Appendices BHT-7500/7500S/7500W Appendix a SpecificationsProduct Specifications Indicator LED Optical Properties Required for Bar Code Labels Bar Code SpecificationsAvailable Bar Code Types Thickness of Bars and Depth of Field Bar Code Label Size GND Interface Specifications Charging Requirements CU-7001 CU-7000 Pin No Signal Functions Signal Input/Output Transmission Control Sequences Appendix B Communications Protocol Details Normal phase Abnormal termination of phase 1 Abort of phase Phase 2 Data Transmission Phase 2 with NAK Phase 2 with EOT Abnormal termination of phase 2 Abort of phase Abnormal termination of phase Aborting Data Transmission BCC for Horizontal Parity Checking BHT-Ir protocol 186 187 188 189 Phase 2 with a sequence of DLE NAK and IDs Phase 2 with a sequence of DLE EOT and IDs 192 193 Phase 3 with timeout at the receiving station CRC File1 00/05/20 Multi K Appendix C Typical Basic Operation Denso Wave Incorporated Bar Code Handy Terminal BHT-7500/7500S/7500W