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HP 34970A manual Simplified Programming Overview

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Chapter 5 Remote Interface Reference

Simplified Programming Overview

Simplified Programming Overview

This section gives an overview of the basic techniques used to program the HP 34970A over the remote interface. This section is only an overview and does not give all of the details you will need to write your own application programs. Refer to the remainder of this chapter and also the application examples in chapter 7. You may also want to refer to the programming reference manual that came with your computer for details on outputting command strings and entering data.

The MEASure? and CONFigure commands provide the most straight- forward method to program the instrument for scanning. You can select the measurement function, range, and resolution all in one command. All other measurement parameters are set to their default values as shown in the table below.

Measurement Parameter	MEASure? and CONFigure Setting
Integration Time	1 PLC
Input Resistance	10	MΩ (fixed for all DCV ranges)
AC Filter	20	Hz (medium filter)
Scan List	Redefined when command executed			5
Scan Interval Source	Immediate			5
Scan Count	1 Scan Sweep
Scan Count	1 Scan Sweep
Channel Delay	Automatic Delay

When you configure a channel using MEASure? or CONFigure, it is important to note that the previous configuration on that channel

is lost. For example, assume that a channel is configured for dc voltage measurements. When you reconfigure that channel for thermocouple measurements, the previous range, resolution, and other measurement attributes are set to their default values.

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HP 34970A manual Simplified Programming Overview

Contents

Ow INURFg k D C C v h Fo Y b krPage No Changes Scan Use the Menu to Fo Y k Zy y Yh AFD7P HS y Yy y Y y y Yh R∙ d Ks GHPDEc FDe c pKs GHPDHc H w p Ks GHPDGc FDe CiKs GHPDICLc feh p Ks GHPDOc HDe vg Ks GHPDMc p p∙ d BHE8 F7o r8 Fo Delhax 6 8 a Express Exchange Hs rContents Contents Contents Contents Page Shift w Instrument does not turn on properly, see User’s Guide5 Service Guide5 Quick Reference Guide5To install the software, see To Prepare the Instrument for UseFile Run fww xw \setup Installing HP BenchLink Data Logger SoftwareSettings Control Panel Add/Remove Programs Install/Uninstall0H1 Wzw To Connect Wiring to a ModuleMl lil l To Set the Time and Date Jyw To Configure a Channel for ScanningQw z wz zyw Ww yw Yz yw wy 877$6772 To Copy a Channel ConfigurationYzz Z3 w wwz yz w yw3 ywz w zw wz Zz yw z w w3 w To Close a Channel9AN w 9A8 w If the Instrument Does Not Turn OnHq FGPN8a t g UptZwx 4 y Yy ww Bench-top viewing positions To Adjust the Carrying HandleTo Rack Mount the Instrument Quick Start Page Page X xz Zx x Front-Panel Menu ReferenceConfigure system-related instrument parameters To Monitor a Single Channel To Set a Scan Interval 1759$/6&$1To Apply Mx+B Scaling to Measurements $%/$6/%6+ ,$/$5021 To Configure Alarm LimitsTo Configure Alarm Limits Ty H To Read a Digital Input PortTo Write to a Digital Output Port 7 h kTo Read the Totalizer Count $567To Output a DC Voltage +3,% To Configure the Remote Interface91,%,76 To Store the Instrument State +$1*6$9Page Computer System Advantages Disadvantages Data Acquisition System OverviewHP BenchLink Data Logger Fo Y k 4yx Wg AFD7O Xx x AFD7O Sdd5 l Xz x xEFC STcaLm pModel Number Module Name Common Uses Signal RoutingCable Type Common Uses Comments System Cabling and Connections starting onKxz zx x z Kzx Z3 x z x R3 U3 b5 Relay Cycle Count on Signal Routing and SwitchingD7v HD8N7v 2rc3 l S7v lX zzx 87 dW X x zx3 Y z z y5 Measurement Input Sdd’s signal-conditioning OSR5 Scan Count GND HL8 BWa3Y zx Xx5 p zx x x z x x zx x z5 HH8 Control OutputFB W 2 bWa ELI Features and Functions Features and Functions Scpi Language Conventions Scpi Language ConventionsScanning ScanningScanning Scanning Power Fails Scanning Fxx xx tz tzx 978 vt Yt z xx Scan Count Initiate the scan Select the interval timer configurationSet the scan interval to 5 seconds Sweep the scan list 2 times∙ Front-Panel Operation Select the bus once configurationGroup Execute Trigger Select the external trigger configuration Ext Trig ConnectorSee Scan Count on page 86 for more information On page 86 for more information Sx wxt vyzz tw z ttxyx Alarm Limits starting onFxxv tx Fxxv x ttvztFxxx vt 9 Ex tt Mt∙ exx Vxytvx bxt SctxtScanning CH Delay Time Range Channel Delay Integration Time Channel DelayAC Filter Channel Delay ∙ Sctxt Readings Aux twz x vtx Twz vtxGt zzxw Ttwz vtxSingle-Channel Monitoring Single-Channel MonitoringROUTMONDATA? Scanning With External Instruments Scanning With External InstrumentsScanning With External Instruments Fxx t Fxxv t tFxvx vtx twvx Fx t t a xvwGeneral Measurement Configuration General Measurement ConfigurationChange the range setting This is the 10 Vdc range, 51⁄2 digits are displayed 101 102 WX c Integration Time Resolution Digits Bits104 105 Temperature Measurement Configuration Temperature Measurement ConfigurationTemperature Measurement Configuration Temperature , Thermocouple 109 To connect an RTD to the module’s screw terminals, see MoX g111 ∙ Remote Interface Operation You can use the MEASure? or To connect a thermistor to the module’s screw terminals, seeMx wv tzx tx Voltage Measurement ConfigurationVoltage Measurement Configuration XW cMx tv tzx tw tv UW fResistance Measurement Configuration Resistance Measurement ConfigurationTo connect resistances to the module’s screw terminals, see Current Measurement Configuration Current Measurement ConfigurationApplies to ac current and ac voltage measurements only 117 Frequency Measurement Configuration Frequency Measurement ConfigurationSensfreqranglow 3,@203 Select the slow timeout 3 Hz Mx+B Scaling Mx+B ScalingStrain Gage Measurements on Vy x x tx tux Xtx x121 Alarm Limits Alarm LimitsUx yzx tz x y Using the Alarm Output Lines on Then, choose from the following alarm conditions Alarm queue is cleared when you read the alarms 126 127 Alarms Connector Oxt tt Otz x y x x vtx x x vtzxOxt y tt 130 131 Or result Calccompmask command decimalResult no alarm generated Pt tw y /wxvt 8=B0Digital Input Operations Digital Input OperationsExtw u ExtwMww 79 xtw t Totalizer Operations Totalizer Operations136 137 Digital Output Operations Digital Output OperationsDAC Output Operations DAC Output OperationsX vxM Xx / PMO vt05 System-Related Operations System-Related Operations141 Extw tx x Vx zReturns 0 if the self-test is successful or 1 if it fails Turns on. See the Uc =EC7M fxvx TwxXt t z uxx Exx Vxytvx bxt144 Fxt Wx 83 8EEC FxxHEWLETT-PACKARD,34901A,0,X.X System-Related Operations 148 Vtxx fOcV yx ytx5 NWkc fRemote Interface Configuration Remote Interface ConfigurationBkcV U 151 KDC5 NDC5Vt xx utw x ytx Lt vx y vxw y y5 3mnCDC5154 Calibration Overview Calibration Overview156 Hv w vwx 158 159 Factory Reset State Factory Reset StateInstrument Preset State Instrument Preset StateMultiplexer Module Default Settings Multiplexer Module Default SettingsModule Overview Module OverviewSx xvyvt xtv 4w3 yx x x xv vt E5 HP 34901A 20-Channel Multiplexer HP 34901A 20-Channel MultiplexerName Function Comments Slot NumberHP 34902A 16-Channel Multiplexer HP 34902A 16-Channel Multiplexer167 HP 34903A 20-Channel Actuator HP 34903A 20-Channel Actuator169 HP 34904A 4x8 Matrix Switch HP 34904A 4x8 Matrix SwitchName Comments HP 34905A/6A Dual 4-Channel RF Multiplexers HP 34905A/6A Dual 4-Channel RF Multiplexers173 HP 34907A Multifunction Module HP 34907A Multifunction ModuleDAC Output Slot Number 100 200Digital Input / Output TotalizerHP 34908A 40-Channel Single-Ended Multiplexer HP 34908A 40-Channel Single-Ended Multiplexer177 Remote Interface Reference Remote Interface Reference Scpi Command Summary Scpi Command SummaryEyy Zz vz 9C Scpi Command Summary Scan Measurement CommandsMonitor Commands Zz vz 99BScpi Command Summary Scan Configuration Commands Zz vz 9A Scpi Command Summary Scan Statistics CommandsScan Memory Commands Zz vzZz vz 9E Scpi Command Summary Scanning With an External InstrumentZz vz 98E Scpi Command Summary Temperature Configuration CommandsScpi Command Summary Voltage Configuration Commands Scpi Command Summary Resistance Configuration Commands Zz vz Kvy vz 98 vy Ud E78N zz z5 Scpi Command Summary Current Configuration Commands191 Scpi Command Summary Mx+B Scaling Commands Scpi Command Summary Alarm Limit Commands Totalizer Commands Scpi Command Summary Digital Input CommandsZz vz 9AB Zz vz 9AD Scpi Command Summary Digital Output CommandsDAC Output Commands Switch Control CommandsZz vz 9B8 Scpi Command Summary Scan Triggering CommandsState Storage Commands Zz vz 99DZz vz 9B Scpi Command Summary System-Related CommandsZz vz 9DB Scpi Command Summary Interface Configuration CommandsStatus System Commands Zz vz 9BEService-Related Commands Scpi Command Summary Calibration CommandsZz vz 9E9 Scpi Command Summary Ieee 488.2 Common Commands Simplified Programming Overview Simplified Programming OverviewXy z y zvy CONFigure zy yvz wMEASure? v z vz INITiate xy z vy 5 iz zRange 41⁄2 Digits Xv zy zyv w z FETCh? xv3 zxz z Vy vz zy vy z Gz z READ? xvy z z205 Xv3 ABORt x Qzxz Pzvzz vz V v zz vzy zMEASure? Command Syntax MEASure? and CONFigure CommandsMEASure? and CONFigure Commands General Measurement Configuration starting onMINMAXDEF, @ MEASureTEMPerature? RTDFRTD,8591DEFYzz MEASureVOLTageDC? MEASureVOLTageAC?MEASureFREQuency? MEASurePERiod? MEASureRESistance? MEASureFRESistance?MEASureCURRentDC? MEASureCURRentAC? Pz vz vz vzy Xv 98 vy Ud E78N zz z5MEASureDIGitalBYTE? @ MEASureTOTalize? READRRESet ,@CONFigureTEMPerature TCouple,BEJKNRSTDEF Minmaxdef ,@t MEASure? and CONFigure Commands CONFigure Command SyntaxCONFigureTEMPerature RTDFRTD,8591DEF Pzzvzz vz vzy xv 98 vy Ud E78N zz z5 CONFigureVOLTageDC CONFigureVOLTageAC AutominmaxdefCONFigureRESistance CONFigureFRESistance CONFigureCURRentDC CONFigureCURRentACCONFigure? @x CONFigureFREQuency CONFigurePERiod AutominmaxdefCONFigureDIGitalBYTE @ CONFigureTOTalize READRRESet ,@SENSeFUNCtion Setting the Function, Range, and ResolutionSetting the Function, Range, and Resolution See also General Measurement Configuration in starting onFRESistanceRANGe? @x SENSe VOLTageDCRANGe? @xVOLTageACRANGe? @x RESistanceRANGe? @xCURRentDCRESolution? @x SENSe VOLTageDCRESolution? @xRESistanceRESolution? @x FRESistanceRESolution? @xCURRentDCAPERture? @x SENSe VOLTageDCAPERture? @xRESistanceAPERture? @x FRESistanceAPERture? @xFRESistance SENSe TEMPeratureVOLTageDC RESistanceGeneral Temperature Commands Temperature Configuration CommandsTemperature Configuration Commands Thermocouple Commands SENSeTEMPeratureRJUNction? @x Thermistor Commands Temperature Configuration Commands RTD CommandsSENSe Zeroauto OFFONCEON,@x ZEROAUTO? @x Voltage Configuration CommandsSee also Voltage Measurement Configuration in starting on INPut IMPedanceAUTO OFFON,@x IMPedanceAUTO? @xCurrent Configuration Commands Resistance Configuration CommandsFrequency Configuration Commands Frequency Configuration CommandsSee also Frequency Measurement Configuration in starting on Scanning Overview Scanning OverviewSee also Scanning in starting on Scanning Overview ROUTeSCANSIZE? Scanning Overview Scanning CommandsTRIGger SOURce BUSIMMediateEXTernalALARm1234TIMer SOURce? ROUTe Scan @ SCAN?TRIGger COUNt x MINMAXINFinity COUNt? TRIGger TIMer y Minmax TIMer?ROUTe CHANnelDELay y CHANnelDELay? @xABORt ROUTe CHANnelDELayAUTO OFFON,@x CHANnelDELayAUTO? @xINITiate FORMat READingALARm Offon READingALARm? Scanning Overview Reading Format CommandsFORMat READingCHANnel Offon READingCHANnel? Hz vxz FORMat READingTIME Offon READingTIME?FORMat READingUNIT Offon READingUNIT? FORMat READingTIMETYPE ABSoluteRELative READingTIMETYPE?CALCulateAVERageMAXimum? @x Scanning Overview Scan Statistics CommandsCALCulateAVERageMINimum? @x CALCulateAVERageMINimumTIME? @xCALCulateAVERageCLEar @x CALCulateAVERageAVERage? @xCALCulateAVERagePTPeak? @x CALCulateAVERageCOUNt? @xDATAPOINts? Scanning Overview Scan Memory CommandsDATAREMove? t ? tx See Reading Format Commands onSYSTemTIMESCAN? FETCh?Single-Channel Monitoring Overview Single-Channel Monitoring OverviewROUTe MONitorSTATe Offon MONitorSTATe? ROUTe MONitor @xvz MONitor?ROUTeMONitorDATA? Scanning With an External Instrument TRIGger SOURce BUSIMMediateEXTernalTIMer SOURce? TRIGger COUNt z MINMAXINFinity COUNt? Y z v Qaa ywy y Ud EC7N5 INSTrumentDMMINSTalled? ROUTe CHANnelFWIRe Offon ,@x CHANnelFWIRe? @xINSTrument Mx+B Scaling Overview Mx+B Scaling OverviewSee also Mx+B Scaling in starting on CALCulate SCALeUNIT zyt SCALeUNIT? @x Mx+B Scaling Overview Mx+B Scaling CommandsCALCulate SCALeGAIN v ,@xt SCALeGAIN? @x CALCulate SCALeOFFSet ,@xt SCALeOFFSet? @xCALCulate SCALeSTATe OFFON,@x SCALeSTATe? @x CALCulateSCALeOFFSetNULL @xAlarm System Overview Alarm System OverviewSee also Alarm Limits in starting on Alarm System Overview Calclimitupper MAX,@101LOWER 9,@101LOWERSTATE on CALCulate LIMitUPPerSTATe OFFON,@xt LIMitUPPerSTATe? @x Alarm System Overview Alarm Limit CommandsOUTPut ALARm1234SOURce @xt ALARm1234SOURce? CALCulate LIMitUPPer z LIMitUPPer? @xCALCulate LIMitLOWer z LIMitLOWer? @x SYSTemALARm?CALCulate LIMitLOWerSTATe OFFON,@xt LIMitLOWerSTATe? @x Vz xvz z5 Alarm System Overview Alarm Output CommandsOUTPut ALARmMODE LATChTRACk ALARmMODE? OUTPut ALARmSLOPe NEGativePOSitive ALARmSLOPe?CALCulate COMPareTYPE EQUalNEQual,@x COMPareTYPE? @x Alarm System Overview Digital I/O Alarm CommandsCALCulate COMPareDATA yvv ,@xt COMPareDATA? @x CALCulate COMPareSTATe OFFON,@x COMPareSTATe? @x CALCulate COMPareMASK COMPareMASK? @xSee also Digital Input Operations in starting on Digital Input CommandsSENSeDIGitalDATABYTEWORD? @x SENSe TOTalizeTYPE READRRESet,@x TOTalizeTYPE? @x Totalizer CommandsSee also Totalizer Operations in starting on SENSeTOTalizeDATA? @x Commands see Reading Format Commands onSENSe TOTalizeSLOPe NEGativePOSitive,@x TOTalizeSLOPe? @x SENSeTOTalizeCLEarIMMediate @xSOURceDIGitalSTATe? @x Digital Output CommandsDAC Output Commands SOURce DIGitalDATABYTEWORD yvv ,@xt DIGitalDATABYTEWORD? @xROUTe CLOSe @x CLOSeEXCLusive @x CLOSe? @x Switch Control CommandsROUTe Open @x OPEN? @x Zv z ROUTe CHANnelFWIRe Offon , @ CHANnelFWIRe? @ROUTeDONE? SYSTemCPON 100200300ALLSAV State Storage CommandsRCL MEMorySTATeDELete MEMorySTATe Name 12345 ,z NAME?MEMorySTATeVALid? RECallAUTO?MEMoryNSTates? SYSTemTIME 3 System-Related CommandsSYSTemDATE 3 3yy SYSTemDATE?Oz v 7 DIAGnostic Pokeslotdata 100200300, zyt PEEKSLOTDATA?SYSTemCTYPe? DISPlay Text zyt DISPlay Offon DISPlay?DISPlayTEXTCLEar Gfxz5 SYSTemPRESetINSTrument DMM Offon Fxz5Gzz xv v xz z Ud EC7N z vz5 SYSTemERRor?SYSTemVERSion? Interface Configuration Commands RS-232 Interface Configuration RS-232 Interface ConfigurationGh6 Sy d Gh6 Yzv Or xz xvwz Gh6 TyyyUd EC7N For more information, see Flow Control Selection on Modem CommunicationsModem Communications Zz yzNy yy gO Scpi Status SystemNy y S gO Ny yOHP 34970A Status System 128 Bit Definitions Status Byte RegisterDecimal Bit Number DefinitionGzv d zzxzy vz hzz3 yxv w gzv d xzv Yxvz vzx Xz5 iz z Ghgf2 yVvzz v xz Xzy wz zzx v gzv d5 S S Ly QQm22048 Bit Definitions Questionable Data Register512 1024Scpi Status System Bit Definitions Standard Event Register Scpi Status System Bit Definitions Alarm Register Bit Definitions Standard Operation Register Dy gGzz z wz vz 9CC z zz wz Status System CommandsStatus Byte Register Commands Vv xzy xvz C z z Gv g fz5 fzzvzSTATusQUEStionableCONDition? Status System Commands Questionable Data Register CommandsSTATusQUEStionableENABle zv STATusQUEStionableENABle? Gzz z wz vz 9D7 z zz wzGzz z wz vz 9D9 z zz wz Status System Commands Standard Event Register CommandsESE zv STATusALARmENABle zv STATusALARmENABle? Status System Commands Alarm Register CommandsSTATusALARmCONDition? STATusALARmEVENt?STATusOPERationCONDition? Status System Commands Standard Operation Register CommandsSTATusOPERationENABle zv STATusOPERationENABle? Gzz z wz vz 9DA z zz wzPSC Miscellaneous Status Register CommandsSTATusPRESet DATAPOINtsEVENtTHReshold t DATAPOINtsEVENtTHReshold?CALibrationSECureCODE txyz Calibration CommandsCALibration? CALibrationCOUNt?CALibrationVALue z CALibrationVALue? CALibrationSECureSTATe OFFON,xyz CALibrationSECureSTATe?CALibrationSTRing zyt CALibrationSTRing?DIAGnosticRELayCYCLes? @x Service-Related CommandsDIAGnosticDMMCYCLes? DIAGnosticDMMCYCLesCLEarWAI Preset state. h xy zz zzxPRESET z fxz5An Introduction to the Scpi Language An Introduction to the Scpi LanguageScpi gvyvy Py vw V is an Syy i byy Routchandelay 1TRIGSOUR EXT HSeY Sy Fy hWvvxz HSeY ey Channel list parameters specify one or Using Device Clear Using Device ClearHz ABORt x xyzy v vz v Page ∙ x o u Error105 Execution Errors 101102 103124 Execution Errors 114j121 123213 Execution Errors 168178 211420 Execution Errors 230310 350 410203 Instrument Errors 111201 202251 Instrument Errors 221225 226281 Instrument Errors 261271 272307 Instrument Errors 303305 306512 Instrument Errors 501502 511604 Self-Test Errors601 602 603704 Calibration Errors701 702 703723 Calibration Errors 710 720721 722Error Messages Page BA8 Example Programs for Excel G68Insert VISAaddr = Excel 7.0 Example takeReadings MacroBAB BAC Dim columnIndex As Integer Excel 7.0 Example ScanChannels MacroBAF BAG Ck qdnT User’s Guide6 o Example Programs for C and C++Ck qdnT User’s Guide6 ++ Example dacout.c ++ Example statreg.c BB9 Page AG= ABAAFF AG8Uzz System Cabling and ConnectionsLz k Gz bz 0zCable Type Nominal Impedance Capacitance Attenuation 99= LvLv 3uqyu Copper-to Uj mGxuuB Gxuyw qs u Measurement Fundamentals WuqZ Uff4 Refer to Measurement Input on Integration Time PLCs WsuQysq Dxu qsuvqsu ytu qsusyvysq Vq tu4 Bz mz 9GG8Measurement Fundamentals Internal DMM Internal DMM Ice Bath Ez b Measurement Fundamentals Copper Constantan Temperature Probe Type Pos + Lead Neg LeadIron Constantan Nickel-Chromium Nickel-AluminumZ4 z ABC MWW299A Nm wStuqq Connection a Connection B Sl py Sk p j HI A1 AC to DC Converter X10 X100 360 361 Km w Example Calculating Measurement Error N5zzz z5 z z 0 z AAD16 Hj sVoltage Measured = ‾‾‾‾‾‾‾‾‾‾‾‾√ V 2 + Noise MWW On-Card Km m Nm mTo Amplifier Analog-to-Digital Converter HI-Source HI-Sense Does not sxqu For more information on channel delay, seeAB8 Offset Compensation on page 115 for more informationInsulating Material Resistance Range Moisture Absorbing Zz4 z FFAi Sz e HI Source HI Sense LO Sense LO Source Strain DMM Sensitivity 376 Measurement Fundamentals V3Vu cyw Wuy q cyxy Low-Level Signal Multiplexing and Switching4 AC8 ELoHI + Source Sense OUT COM H GND COM L Zz AE Module Bank Module ReferenceActuators and General-Purpose Switching Rp = Dxu q u Ytu u qt Dxuuvu2 xu yy b Sq ru t qB Module Reference Wqy cyxy Matrix SwitchingMatrix Module BO cyw RF Signal Multiplexing9A7 Multifunction Module 393 = 24 k Ω GND TTL AC For more information on cabling noise, see U55R EnkmF yR B8 R URT z16 ∙ d qy s2 u .b Yu tyqwq Qr/ w Nkm o Buq Z Relay Life and Preventative MaintenanceQsuqsu wuqq Uu utysuqqy4 AOT AHeAHf AOODC Voltage DC, Resistance, and Temperature Accuracy SpecificationsKi u y DC Measurement and Operating CharacteristicsGi g AC Accuracy SpecificationsGi u AC Measurement and Operating CharacteristicsSingle Channel Measurement Rates 1 System Characteristics Measurement Rates and System CharacteristicsTagHOr7 TagHPr7 TagHfr7 TagHTr7 TagHar Module SpecificationsTagHcr7 TagHdr Typical AC Performance Graphs TagHer Product and Module Dimensions Understanding the % of reading Error o To Calculate Total Measurement Error× 1,000,000 Understanding the % of range Error oInterpreting Internal DMM Specifications Criteria 417LYR u BdR uVhh 87 b 87 q ∙ p =4 ∙ n ∙ n c 77 =8F Configuring for Highest Accuracy MeasurementsIndex Index CAB CAC CAD CAE CAF CAG CAH CB8 CB9 CBA CBB Declaration of Conformity Ajjh