Agilent Technologies 66lxxA manual System Considerations, Assign @PM3TO

Page 16

System Considerations

The remainder of this chapter addresses some system issues concerning programming. These are power module addressing and the use of the following types of GPIB system interfaces:

1.HP Vectra PC controller with Agilent 82335A GPIB Interface Command Library

2.IBM PC controller with National Instruments GPIB-PCII Interface/Handler

3.Agilent controller with Agilent BASIC Language System

Note

Some specific application programs are given in Appendix B.

Assigning the GPIB Address in Programs

The power module address cannot be set remotely. It is determined by the position of the mainframe address switch and the position of power module (slot position) within the mainframe. ( See the Mainframe Users Guide for details.)

The following examples assume that the GPIB select code is 7, the mainframe interface address is 6, and that the power module address will be assigned to the variable PM3 (power module in the third mainframe slot).

1060

! Power Module installed in Primary Mainframe

1070

PM3=70602

! Agilent 82335A Interface

1070

ASSIGN @PM3TO 70602

! Agilent BASIC Interface

1080

!

 

 

1080

! Power Module installed in Auxiliary Mainframe

1090

PM=70610

 

! Agilent 82335A Interface

1090

ASSIGN @PM3 TO 70610 ! Agilent BASIC Interface

For systems using the National Instruments DOS driver, the address is specified in the software configuration program (IBCONFIG.EXE) and assigned a symbolic name. The address then is referenced only by this name within the application program (see the National Instruments GPIB documentation).

DOS Drivers

Types of Drivers

The Agilent 82335A and National Instruments GPIB are two popular DOS drivers. Each is briefly described here. See the software documentation supplied with the driver for more details.

Agilent 82335A Driver. For GW-BASIC programming, the GPIB library is implemented as a series of subroutine calls. To access these subroutines, your application program must include the header file SETUP.BAS, which is part of the DOS driver software.

SETUP.BAS starts at program line 5 and can run up to line 999. Your application programs must begin at line 1000. SETUP.BAS has built-in error checking routines that provide a method to check for GPIB errors during program execution. You can use the error-trapping code in these routines or write your own code using the same variables as used by SETUP.BAS.

National Instruments GPIB Driver. Your program must include the National Instruments header file DECL.BAS. This contains the initialization code for the interface. Prior to running any applications programs, you must set up the interface with the configuration program (IBCONF.EXE).

16 Introduction To Programming

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Contents Agilent Part No Microfiche Part No Update April Programming GuideSafety Guidelines Contents Abor Status Reporting Synchronizing Power Module Output Changes Error MessagesIntroduction About This GuideDocumentation Summary External ReferencesVXIplug&play Power Products Instrument Drivers Downloading and Installing the DriverAccessing Online Help Supported ApplicationsGpib Capabilities Of The Power Module Introduction To ProgrammingModule Gpib Address Introduction To ScpiRST *IDN? *SRE Volt LEV Prot Curr Voltlev 8.0 Prot 8.8 CURR?Outpprotdel Traversing the Command Tree Effect of Optional HeadersOutputprotectionclear STATUSOPERATIONCONDITION? OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION?Voltagelevel 7PROTECTION 8CURRENTLEVEL 3MODE List Volttrig 7.5INIT*TRG Outp OFF*RCL 2OUTP onSymbol Numerical Data Formats Talking FormatsListening Formats Suffixes and Multipliers Class Unit Unit with MultiplierSystem Considerations Assign @PM3TOError Handling Agilent Basic ControllersUsing the National Instruments Gpib Interface Sending the Command Volt 5 in Basic Sending the Command Volt 5 in CReceiving Data from the Module Receiving Module Data with BasicReceiving Module Data with C Language Dictionary IntroductionDescription Of Common Commands CLSMeaning and Type DescriptionBit Configuration of Standard Event Status Enable Register ESEESE ESR?OPC IDN?OPC? OPT? PSCRCL RCLRST SRE SAVSRE STB? Bit Configuration of Status Byte RegisterTRG Description of Subsystem Commands TST?WAI AborSubsystem Tree Diagram Calibration Subsystem CalautoCalauto 1 Calauto Once CalcurrCalcurrlev CalpassCalsave CalstatCalvolt CalvoltlevCalvoltprot CurrCurr 500 MA Currlev CurrmodeCurrprotstat Currprotstat OFFCurrtrig Currtrig 1200 MA CurrlevtrigInit Initcont 1 Initcont on ListcounListcoun Listcoun INF ListcurrLISTCURRPOIN? ListdwelLISTDWELPOIN? ListstepListvolt Listvolt 2.0,2.5,3.0 Listvolt MAX,2.5,MINLISTVOLTPOIN? MEASCURR? MEASVOLT?Outp Outpstat ON,NORELAY OutpprotOutpprotcle Outpprotdel 75E-1 OutprelOutprelpol NormOutpttlt Outpttlt 1 Outpttlt OFFOutpttltlink Outpttltsour LinkSTATOPER? STATOPEREVEN?STATOPERCOND? StatoperenabStat Oper NTR 32 Stat Oper PTR StatpresSTATQUES? STATQUESEVEN?STATQUESCOND? Stat Ques COND?SYSTERR? SYSTVERS?Trigger Subsystem TrigTrig Trig IMM TrigdelTrigdel .25 Trigdel MAX TriglinkVolt VoltlevVoltmode Voltmode List Voltmode FIXVolttrig VOLTSENSSOUR?Volttrig 1200 MV Voltlevtrig Power Module Programming Parameters Link Parameter ListPower Module Status Structure Status Register Bit ConfigurationStatus Reporting Operation Status GroupStatus Questionable Commands Query Bit Signal Bit Configurations of Status Registers MeaningQuestionable Status Group Power Module Status Model Standard Event Status GroupOutput Queue Status Byte RegisterLocation Of Event Handles Initial Conditions At Power On ExamplesStatoperptr 5376ENAB Statquesptr 18ENABSTATOPEREVEN?QUESEVEN? Statoperptr 1024NTR Statoperenab 1024*SRETrigger Subsystem Synchronizing Power Module Output ChangesModel of Fixed-Mode Trigger Operation Idle State Delaying StateInitiated State Model of List Mode Trigger Operation INITiateCONTinuous CommandTrigger Status and Event Signals Output Change StateOutpttltsour List Subsystem Listvolt 3.0,3.25,3.5,3.75 Listdwel 10,10,25,40 Automatically Repeating a ListListcurr 2,3,12,15 Triggering a ListTiming diagrams of Liststep Operation Scpi Command Completion DFI Discrete Fault Indicator SubsystemRI Remote Inhibit Subsystem Error Messages Power Module Hardware Error MessagesSystem Error Messages Standard Event Status Register Error Bits222 -223 -241 -310 -330 -350 -400 -410 -420 -430 Scpi Confirmed Commands Scpi Approved CommandsScpi Conformance Information Scpi VersionNon-SCPI Commands Application Programs Application 1. Sequencing Multiple Modules During Power Up Figure B1-1. Block Diagram of Application #1 Variations On This ImplementationFigure B1-2. Timing Diagram of Application #1 Reset and Clear Module Enable Backplane TTL Trigger DriveEnable Output Enable Response to TriggerImplementation Details How The MPS Implements The Solution MPS Set Up Figure B2-1. Block Diagram of Application #2 When a CV-TO-CC Transition Occurs Enable TTL Trigger DriveEnable Response to TTL Trigger Start AT 15Application 3. Controlling Output Voltage Ramp Up at Turn On Figure B3-1. Simulating a Slow Voltage Ramp Generating the Desired Voltage Ramp for Application #3 Option Base Start Voltage for RampStop Voltage for Ramp SecondsApplication 4. Providing Time-Varying Voltages Figure B4-1. Voltage Waveform for Application #4Module set up Variations On This Implementation Enable OCP No Delay Before Protection OccursEnable Detection of OC Condition Enables Detection on Positive TRANSITION, I.EApplication 5. Providing Time-Varying Current Limiting Figure B5-1. Typical DUT Current vs. Time Implementation Details How The MPS Implements The Sequence GO to 12 V When Triggered Current Limit DataDwell Time Data SET to GET Current from ListApplication 6. Output Sequencing Paced by the Computer Nominal 12MPS Set Up Figure B6-1. Block Diagram of Application #6 These are the Bias Supply Limit ConditionsTo be Tested Number of Bias Supply Limit C0MBINATIONSReturn Overview Of Application Advantages/Benefits Of The MPS Solution Figure B7-1. Block Diagram of Application #7 When the Module Indicates SIC Step Completed When IT Completes the LIST. OPC Generates SROEnable SRQ Interrupt Enable Intr Identify Handler SubroutineSupplemental Information CMD$ = Output on ‘ Enable Output CMD$ = Initiate ‘ Enable Trigger to Start List‘ Conversion to Send Real Numbers Over the BUS CMD$ = Voltmode List ‘ SET to GET Voltage from ListCall Iooutputs SLOTO, CMDS, L Waiting for Trigger BIT 5 of the Operation Status RegisterCONDITION.DATA = Wend‘ Disable Auto Serial Poll If IBSTA% 0 then Goto ‘ AS Part of the Command String‘ Program N3.BAS ‘ INSTRUMENT.NAME$ = SlotoIf IBSTA% 0 then Goto Selected AS a Trigger Source ‘ General Error HandlerStop Application #3 Controlling Voltage Ramp UP AT Turn on Dwell = ramptimeTo terminate the iooutputa Int error Char *badstring If error != EOl enabled for both read and write Strcatvlist, vpoint This is a generalized error checking routine Index IndexIndex Index Index Agilent Sales and Support Offices United States Latin AmericaManual Updates
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