Protocol Overview, Protocol Operation | HP Sander 16500C guide

Message Communication and System Functions

Protocols

Protocol Overview

The instrument and controller communicate using program messages and response messages. These messages serve as the containers into which sets of program commands or instrument responses are placed. Program messages are sent by the controller to the instrument, and response messages are sent from the instrument to the controller in response to a query message. A query message is defined as being a program message which contains one or more queries. The instrument will only talk when it has received a valid query message, and therefore has something to say. The controller should only attempt to read a response after sending a complete query message, but before sending another program message. An important rule to remember is that the instrument will only talk when prompted to, and it then expects to talk before being told to do something else.

Protocol Operation

When the instrument is turned on, the input buffer and output queue are cleared, and the parser is reset to the root level of the command tree.

The instrument and the controller communicate by exchanging complete program messages and response messages. This means that the controller should always terminate a program message before attempting to read a response. The instrument will terminate response messages except during a hardcopy output.

If a query message is sent, the next message passing over the bus should be the response message. The controller should always read the complete response message associated with a query message before sending another program message to the same instrument.

The instrument allows the controller to send multiple queries in one query message. This is referred to as sending a "compound query." As noted in chapter 1, "Multiple Queries," multiple queries in a query message are separated by semicolons. The responses to each of the queries in a compound query will also be separated by semicolons.

Commands are executed in the order they are received.

6–4

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HP Sander 16500C manual Protocol Overview, Protocol Operation

Contents

HP 16500C/16501A Logic Analysis System Page This Book OrganizationGuide is organized in three parts IiiPage Contents Contents Command Set Organization Subsystems Program Examples Protocols 6-3 Syntax Diagrams 6-5 Syntax OverviewHP-IB Commands Contents-3 Truncation Rule Infinity Representation Device Dependent Errors Internal Errors Query ErrorsCLS Clear Status ESE Event Status Enable Menu Contents-4 Mesen Module Event Status Enable 10-16 PURGe 12-20 PWD Present Working Directory Contents-5RMODe RTC Real-time Clock SELect 10-21 SETColor STARt 10-24 10-25 XWINdow REName STORe CONFig UPLoad VOLume INTermodule Subsystem Contents-7 15-3Sending Queries to the Logic Analysis System 15-9 Contents-8 General Information Page Introduction to Programming Introduction RS-232-C, or Ethernet LAN Returned from a queryHP Basic Example Talking to Individual System Modules InitializationExample See Also Talking to Individual System Modules Command Initialization ExampleExists into the system Program the Logic Analysis System Output Command Instruction SyntaxInstruction Syntax Program Message Syntax Device Address InstructionsDevice Address Instruction Header Instruction Terminator Instruction TerminatorWhite Space Instruction Parameters Simple Command Header Compound Command HeaderHeader Types Header Types Common Command Header Combined Commands in the Same SubsystemDuplicate Keywords Duplicate Keywords Query Usage Query Usage Program Header Options Program Header OptionsShort form Parameter Data Types See Also ExampleParameter Data Types Numeric data String data Keyword data Selecting Multiple Subsystems Selecting Multiple Subsystems Receiving Information from the Logic Analysis System Response Header Options Response Header OptionsWith Header OFF With Header on and Longform OFF Response Data Formats Response Data Formats String Variables String VariablesResponse Used for string concatenation Numeric Base Numeric VariablesNumeric Base Definite-Length Block Response Data Definite-Length Block Response Data Multiple Queries Multiple QueriesDefinite-length Block Response Data Installed modules System StatusSystem Status MorePage Programming Over HP-IB Introduction Command and Data Concepts Interface CapabilitiesTalk/Listen Addressing Interface Capabilities HP-IB Bus Addressing HP-IB Bus AddressingInterface Select Code Selects the Interface Instrument Address Selects the Instrument Local, Remote, and Local Lockout Local, Remote, and Local Lockout ExampleHint See Also Bus Commands Bus CommandsDevice Clear Group Execute Trigger GET Programming Over RS-232-C Introduction Interface Operation RS-232-C CablesInterface Operation Minimum Three-Wire Interface with Software Protocol Minimum Three-Wire Interface with Software Protocol Extended Interface with Hardware Handshake Extended Interface with Hardware HandshakeTwo bytes Pin Cable Examples Cable ExamplesHP 9000 Series Cable Example Configuring the Logic Analysis System Interface Configuring the Logic Analysis System InterfaceHP Vectra Personal Computers and Compatibles Pin F to 25-pin M Cable Protocol Data Bits RS-232-C Bus Addressing RS-232-C Bus AddressingController and the HP 16500C Logic Analysis System must be HP Vectra Personal Computers or compatibles Lockout Command Lockout Command Programming Over LAN Introduction Communicating with the HP 16500C LAN AddressingCommunicating with the HP 16500C Password Protection and File Protection Password Protection and File ProtectionPermission Levels Control and Data Controlling the HP 16500C Controlling the HP 16500CSockets Echoing Commands Echoing Commands Copying Command Files Copying Command Files Resetting the File Pointer Writing to \system\program from a ProgramQueries Directory Writing to \system\program from a Program Sending Commands to the HP 16500C Socket Sending Commands to the HP 16500C SocketParser socket Socket will eventually close without receiving a response Start Lockout Command Page Programming and Documentation Conventions Introduction Truncation Rule Truncation RuleTruncation Examples Long Form Short Form Sequential and Overlapped Commands Syntax DiagramsInfinity Representation Response Generation Notation Conventions and Definitions Notation Conventions and Definitions Command Tree Command TreeCommand Types HP 16500C Command Tree Tree Traversal Rules Tree Traversal Rules Store command as shown in the second line of this example To the root of the command tree. The parser can then seeTree Traversal Rules Example Command Set Organization Command Set OrganizationSubsystems Subsystems Alphabetic Command Cross-Reference Command Subsystem Keywords in short form, numbers using an exponential format Program ExamplesProgram Examples Message Communication and System Functions Compatible instruments may or may not conform to the Ieee Protocols ProtocolsFunctional Elements Protocol Overview Protocol Operation Syntax Diagrams Protocol Exceptions Example syntax diagram Syntax Overview Syntax Overview Program message Parse Tree Upper/Lower Case Equivalence Suffix multValue Mnemonic Suffix Status Reporting Introduction Status Byte Structures and Concepts Service Request Enable Register Event Status RegisterBit Definitions PON power on CME command errorEXE execution error DDE device specific error Key Features LCL remote to localMSB module summary bit Operation Complete Service Request Enabling Using Serial Poll HP-IB Serial PollSerial Poll Parallel Poll Parallel Poll Parallel Poll Data Structure Configuring Parallel Poll Responses Polling HP-IB DevicesPolling HP-IB Devices Conducting a Parallel Poll Conducting a Parallel Poll HP-IB Commands Parallel Poll Unconfigure CommandParallel Poll Configure Command Disabling Parallel Poll Responses HP-IB Commands Parallel Poll Enable CommandParallel Poll Disable Command Parallel Poll Commands Error Messages Introduction Device Dependent Errors Command ErrorsDevice Dependent Errors Execution Errors Internal ErrorsExecution Errors Query Errors Query ErrorsPage Commands Page Common Commands CLS Order to re-enter the memory subsystem and store the file Status Registers Common Commands Syntax Diagram CLS Clear Status Common Command Parameter Values CLS Clear StatusCLS Parameter Values Mask ESE Event Status Enable ESE Event Status EnableESE mask ESE? Bit Position Bit Weight Enables ESR Event Status RegisterESR? String variable Esrevent$ will have bit 5 the CME bit set Bit Position Bit Weight Bit Name Condition ESR Event Status RegisterStandard Event Status Register IDN Identification Number IST Individual StatusIST? IDN Identification Number IST Individual Status IST Data Structure OPC Operation Complete OPCOPC? OPC Operation Complete OPT Option Identification OPT Option Identification PRE Parallel Poll Enable Register Enable PRE Parallel Poll Enable Register EnablePRE mask PRE? RST Reset RST Reset HP 16500C Parallel Poll Enable Register SRE Service Request Enable SRE Service Request EnableSRE mask SRE? STB Status Byte HP 16500C Service Request Enable Register STB Status ByteSTB? Bits in the status byte TRG Trigger TRGTRG Trigger Status Byte Register Bits Returned by *TST? Query Power-Up Test Results TST TestTST? TST Test WAI Wait WAIWAI Wait HP 16500C are STARt and StopPage Mainframe Commands Menu 10-2 Mainframe Commands Syntax Diagram 10-3 10-4 Mainframe Parameter Values 10-5Parameter Values CommandBEEPer ON1OFF0 BEEPerBEEPer? BEEPer CAPability CAPability?CAPability HP 16500C Capability Sets CARDcage CARDcage?CARDcage CARDcage Card Identification Numbers 10-9Id Number Card Cese Combined Event Status Enable CESE? query returns the current settingCese value CESE? Bit Weight Enables Cesr Combined Event Status RegisterValue An integer from 0 to Cesr Combined Event Status Register 10-12 CommandEOI ON1OFF0 EOI End Or IdentifyLER LCL Event Register EOI? CommandLOCKout ON1OFF0 LOCKoutLOCKout? LOCKout CommandMENU module,menu 10-15Parameter Menu Mesen Module Event Status Enable CommandMESEN enablevalueMesen Module Event Status Enable System Menu Values MENU? Mesen Module Event Status Enable Example QueryMESEN?10-17 Mesrn Module Event Status Register MESRN?Mesrn Module Event Status Register HP 16500C Mainframe Module Event Status Register N=0 RMODe RMODe SINGleREPetitiveRMODe? RMODe RTC Real-time Clock RTC Real-time Clock CommandSELect module SELectSELect? SELect Select Command Tree 10-22 CommandSETColor color,hue,sat,lumDEFault SETColorSETColor 10-23 STARt STARtSTARt Stop 10-25 XWINdow XWINdow OFF0 ON1,displayXWINdow SYSTem Subsystem Data DSP 11-2 System Subsystem Commands Syntax Diagram 11-3 SYSTem Parameter Values 11-4 CommandSYSTemDATA blockdata Data CommandSYSTemDSP string DSP DisplayQuerySYSTemDATA? DSP Display ERRor SYSTemERRor? NUMericSTRingERRor CommandSYSTemHEADer ON1OFF0 HEADerSYSTemHEADer? HEADer CommandSYSTemLONGform ON1OFF0 LONGformSYSTemLONGform? LONGform PRINt SYSTemPRINt SCReen,DISK, pathname ,msus, BtifctifpcxepsPRINt SYSTemPRINt? SCReenALL This instruction prints the screen to the printerThis instruction prints part of a listing to disk 11-11 SETup CommandSYSTemSETup blockdataSETup 11-12 QuerySYSTemSETup? 11-13 11-14 MMEMory Subsystem Working directory 12-2 MMEMory Subsystem Commands Syntax Diagram 12-3 12-4 12-5 MMEMory Parameter Values 12-6 AUToload MMEMoryAUToload?AUToload CATalog MMEMoryCATalog? ALLFULL,msusCATalog CommandMMEMoryCD directoryname ,msus CD Change DirectoryCD Change Directory 12-9 CommandMMEMoryCOPY name,msus,newname,msus Copy To copy the contents of FILE1 to FILE2 DOWNloadDOWNload Example Disk File Types 12-12File File Type CommandMMEMoryIDENtify? msus IDENtifyIDENtify INITialize MMEMoryINITialize LIFDOS,msusINITialize Drive LOADCONFig CommandMMEMoryLOADCONfig name,msus,moduleLOADCONFig 12-15 CommandMMEMoryLOADIASSembler IAname,msus,12 ,module Load IASSemblerLoad IASSembler 12-16 CommandMMEMoryMKDir directoryname ,msus MKDir Make DirectoryMKDir Make Directory 12-17 CommandMMEMoryMSI msus MSI Mass Storage IsQueryMMEMoryMSI? MSI Mass Storage Is CommandMMEMoryPACK msus Pack CommandMMEMoryPURGe name,msus PURGePURGe PWD Present Working Directory MMEMoryPWD? msusPWD Present Working Directory CommandMMEMoryREName name,msus,newname RENameREName 12-22 STORe CONFig MMEMorySTOReCONfig name,msusSTORe CONFig Description,module UPLoad MMEMoryUPLoad? name,msusUPLoad Instrument in block data form VOLume MMEMoryVOLume? msusVOLume 12-25 12-26 INTermodule Subsystem Portedge Portlev Skew Tree 13-2 Intermodule Subsystem Commands Syntax Diagram 13-3 13-4 INTermodule INTermoduleINTermodule INTermodule Parameter Values 13-5 DELete INTermoduleDELete ALLOUTmoduleDELete 13-6 HTIMe QueryINTermoduleHTIMe?HTIMe ValueX Skew for module in slot X real number INPort INTermoduleINPort ON1OFF0INTermoduleINPort? INPort INSert INTermoduleINSert ModuleOUT,GROUPmoduleINSert CommandINTermoduleOUTDrive 0NORMal1OPENcllctr OUTDriveOUTPolar INTermoduleOUTDrive? CommandINTermoduleOUTType 0FEEDthru 1LATChed 2PULse OUTTypeQueryINTermoduleOUTPolar? INTermoduleOUTType? Portedge query returns the current edge setting INTermodulePORTEDGE edgespecINTermodulePORTEDGE? 13-12 PORTlev query returns the current BNC threshold setting INTermodulePORTLEV TTLECLuserlevQueryINTermodulePORTLEV? This statement sets the BNC threshold to -2.3 volts CommandINTermoduleSKEWN setting Query returns the user defined skew settingINTermoduleSKEWN? 13-14 Tree 13-15 QueryINTermoduleTREE? 13-16 TTIMe QueryINTermoduleTTIMe?TTIMe Module Trigger time for module real number 13-18 TGTctrl Subsystem Type 14-2 Targetcontrol Subsystem Commands Syntax Diagram 14-3 14-4 TGTctrl TGTctrlTGTctrl 14-5 TGTctrlALLN? AVAILable TGTctrlAVAILable?AVAILable CommandTGTctrlBITSN mask QueryTGTctrlBITSN?14-8 CommandTGTctrlDRIVeN NORMal0OPENcllctr1 CURSTateDRIVe TGTctrlCURSTateN? CommandTGTctrlLASTstateN state LASTstateQueryTGTctrlLASTstateN? LASTstate CommandTGTctrlNAMeN name NAMeQueryTGTctrlNAMeN? NAMe SIGNal CommandTGTctrlPULseNTGTctrlSIGNalN OFF0ON1 TGTctrlSIGNalN? SIGSTatus QueryTGTctrlSIGSTatusN?SIGSTatus 14-13 STATEs TGTctrlSTATEsN value0,value1Value7 TGTctrlSTATEsN? CommandTGTctrlSTEPN CommandTGTctrlTOGgleNTOGgle 14-15 CommandTGTctrlTYPeN TOGgle0 PULse1 SEQuence2 TYPeQueryTGTctrlTYPeN? TYPe Programming Examples Page Programming Examples 15-2 Transferring the Mainframe Configuration Transferring the Mainframe Configuration 15-4 Output 707SYSTEMHEADER on Output 707SYSTEMLONGFORM on 15-5 Checking for Intermodule Measurement Completion Checking for Intermodule Measurement Completion15-6 Sending Queries to the Logic Analysis System Sending Queries to the Logic Analysis System15-7 15-8 Getting Ascii Data with PRINt? ALL Query Getting Ascii Data with PRINt? ALL Query Reading the disk with the CATalog? ALL query Reading the disk with the CATalog? ALL queryCATALOG? ALL query with DOS disks 15-10 Reading the Disk with the CATalog? Query Reading the Disk with the CATalog? QueryTruncated at 51 characters Printing to the disk Printing to the disk15-12 Index Index-1 Index Index-2 Index-3 Portedge Index-4 Document Warranty Product Warranty