Introduction To Programming | Agilent Technologies 66lxxA guide

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Introduction To Programming

GPIB Capabilities Of The Power Module

All power module functions except for setting the GPIB address are programmable over the GPIB. The IEEE 488.1 capabilities of the power module are listed in the User’s Guide.

Module GPIB Address

The power module operates from a primary GPIB address that is set by a switch on the mainframe. The power module’s secondary GPIB address is determined by its slot position within the mainframe. See the mainframe Installation Guide for details.

Introduction To SCPI

SCPI (Standard Commands for Programmable Instruments) is a programming language for controlling instrument functions over the GPIB (IEEE 488) instrument bus. SCPI is layered on top of the hardware-portion of IEEE 488.2. The same SCPI commands and parameters control the same functions in different classes of instruments. For example, you would use the same DISPlay command to control the power module display state and the display state of a SCPI-compatible multimeter.

Conventions

The following conventions are used throughout this chapter:

Angle brackets	<	>	Items within angle brackets are parameter abbreviations. For example, <NR1>
			indicates a specific form of numerical data.
Vertical bar			Vertical bars separate one of two or more alternative parameters. For example,
			0OFF indicates that entering either "0" or "OFF" performs the same function.
Square Brackets	[	]	Items within square brackets are optional. The representation [SOURce]:LIST
			means that SOURce may be omitted.
Braces	{	}	Braces indicate parameters that may be repeated zero or more times. It is used
			especially for showing arrays. The notation <A>{<,B>} shows that parameter
			"A" must be entered, while parameter "B" may be omitted or may be entered one
			or more times.
Boldface font			Boldface font is used to emphasize syntax in command definitions.
			TRIGger:DELay <NRf> shows a command definition.
Computer font			Computer font is used to show program lines in text. TRIGger: DELay .5 shows a
			program line.

Introduction To Programming 9

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Agilent Technologies 66lxxA manual Introduction To Programming, Gpib Capabilities Of The Power Module, Module Gpib Address

Contents

Programming Guide Agilent Part No Microfiche Part No Update April Safety Guidelines Contents Abor Status Reporting Error Messages Synchronizing Power Module Output Changes About This Guide IntroductionDocumentation Summary External References Downloading and Installing the Driver VXIplug&play Power Products Instrument DriversAccessing Online Help Supported Applications Introduction To Programming Gpib Capabilities Of The Power ModuleModule Gpib Address Introduction To Scpi RST *IDN? *SRE Voltlev 8.0 Prot 8.8 CURR? Volt LEV Prot Curr Outpprotdel Effect of Optional Headers Traversing the Command Tree OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION? Outputprotectionclear STATUSOPERATIONCONDITION?Voltagelevel 7PROTECTION 8CURRENTLEVEL 3MODE List Volttrig 7.5INIT*TRG Outp OFF*RCL 2OUTP on Numerical Data Formats Talking Formats SymbolListening Formats Suffixes and Multipliers Class Unit Unit with Multiplier Assign @PM3TO System Considerations Agilent Basic Controllers Error Handling Using the National Instruments Gpib Interface Sending the Command Volt 5 in C Sending the Command Volt 5 in Basic Receiving Module Data with Basic Receiving Data from the Module Receiving Module Data with C Introduction Language Dictionary CLS Description Of Common CommandsMeaning and Type Description ESE Bit Configuration of Standard Event Status Enable RegisterESE ESR? IDN? OPCOPC? PSC OPT? RCL RCLRST SAV SRESRE Bit Configuration of Status Byte Register STB?TRG TST? Description of Subsystem CommandsWAI Abor Calauto Subsystem Tree Diagram Calibration Subsystem Calcurr Calauto 1 Calauto OnceCalcurrlev Calpass Calstat CalsaveCalvolt Calvoltlev Curr CalvoltprotCurr 500 MA Currlev Currmode Currprotstat OFF CurrprotstatCurrtrig Currtrig 1200 MA Currlevtrig Listcoun Init Initcont 1 Initcont onListcoun Listcoun INF Listcurr Listdwel LISTCURRPOIN?LISTDWELPOIN? Liststep Listvolt 2.0,2.5,3.0 Listvolt MAX,2.5,MIN ListvoltLISTVOLTPOIN? MEASCURR? MEASVOLT? Outpprot Outp Outpstat ON,NORELAY Outprel Outpprotcle Outpprotdel 75E-1Outprelpol Norm Outpttlt 1 Outpttlt OFF OutpttltOutpttltlink Outpttltsour Link STATOPEREVEN? STATOPER?STATOPERCOND? Statoperenab Statpres Stat Oper NTR 32 Stat Oper PTR STATQUESEVEN? STATQUES?STATQUESCOND? Stat Ques COND? SYSTVERS? SYSTERR?Trigger Subsystem Trig Trigdel Trig Trig IMMTrigdel .25 Trigdel MAX Triglink Voltlev VoltVoltmode Voltmode List Voltmode FIX VOLTSENSSOUR? VolttrigVolttrig 1200 MV Voltlevtrig Link Parameter List Power Module Programming Parameters Status Register Bit Configuration Power Module Status StructureStatus Reporting Operation Status Group Bit Signal Bit Configurations of Status Registers Meaning Status Questionable Commands QueryQuestionable Status Group Standard Event Status Group Power Module Status Model Status Byte Register Output QueueLocation Of Event Handles Examples Initial Conditions At Power On Statquesptr 18ENAB Statoperptr 5376ENABSTATOPEREVEN?QUESEVEN? Statoperptr 1024NTR Statoperenab 1024*SRE Synchronizing Power Module Output Changes Trigger SubsystemModel of Fixed-Mode Trigger Operation Delaying State Idle StateInitiated State INITiateCONTinuous Command Model of List Mode Trigger OperationTrigger Status and Event Signals Output Change State Outpttltsour List Subsystem Automatically Repeating a List Listvolt 3.0,3.25,3.5,3.75 Listdwel 10,10,25,40Listcurr 2,3,12,15 Triggering a List Timing diagrams of Liststep Operation DFI Discrete Fault Indicator Subsystem Scpi Command CompletionRI Remote Inhibit Subsystem Power Module Hardware Error Messages Error MessagesSystem Error Messages Standard Event Status Register Error Bits 222 -223 -241 -310 -330 -350 -400 -410 -420 -430 Scpi Approved Commands Scpi Confirmed CommandsScpi Conformance Information Scpi Version Non-SCPI Commands Application Programs Application 1. Sequencing Multiple Modules During Power Up Variations On This Implementation Figure B1-1. Block Diagram of Application #1 Figure B1-2. Timing Diagram of Application #1 Enable Backplane TTL Trigger Drive Reset and Clear ModuleEnable Output Enable Response to Trigger Implementation Details How The MPS Implements The Solution MPS Set Up Figure B2-1. Block Diagram of Application #2 Enable TTL Trigger Drive When a CV-TO-CC Transition OccursEnable Response to TTL Trigger Start AT 15 Application 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 Start Voltage for Ramp Option BaseStop Voltage for Ramp Seconds Figure B4-1. Voltage Waveform for Application #4 Application 4. Providing Time-Varying Voltages Module set up Variations On This Implementation No Delay Before Protection Occurs Enable OCPEnable Detection of OC Condition Enables Detection on Positive TRANSITION, I.E Application 5. Providing Time-Varying Current Limiting Figure B5-1. Typical DUT Current vs. Time Implementation Details How The MPS Implements The Sequence Current Limit Data GO to 12 V When TriggeredDwell Time Data SET to GET Current from List Nominal 12 Application 6. Output Sequencing Paced by the Computer MPS Set Up Figure B6-1. Block Diagram of Application #6 Supply Limit Conditions These are the BiasTo be Tested Number of Bias Supply Limit C0MBINATIONS Return Overview Of Application Advantages/Benefits Of The MPS Solution Figure B7-1. Block Diagram of Application #7 When IT Completes the LIST. OPC Generates SRO When the Module Indicates SIC Step CompletedEnable SRQ Interrupt Enable Intr Identify Handler Subroutine Supplemental Information CMD$ = Initiate ‘ Enable Trigger to Start List CMD$ = Output on ‘ Enable Output‘ Conversion to Send Real Numbers Over the BUS CMD$ = Voltmode List ‘ SET to GET Voltage from List Waiting for Trigger BIT 5 of the Operation Status Register Call Iooutputs SLOTO, CMDS, LCONDITION.DATA = Wend If IBSTA% 0 then Goto ‘ AS Part of the Command String ‘ Disable Auto Serial Poll‘ Program N3.BAS ‘ INSTRUMENT.NAME$ = Sloto ‘ General Error Handler If IBSTA% 0 then Goto Selected AS a Trigger SourceStop Dwell = ramptime Application #3 Controlling Voltage Ramp UP AT Turn on To 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 Index Index Index Index United States Latin America Agilent Sales and Support Offices Manual Updates