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Agilent Technologies 66312A, 6634B Using the Inhibit/Fault Port as a Digital I/O, Fault/Inhibit

Models: 6632B 6633B 66332A 6634B

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Using the Inhibit/Fault Port as a Digital I/O

Programming the DC Source - 3

Using the Inhibit/Fault Port as a Digital I/O

You can configure the inhibit/fault port to provide a digital input/output to be used with custom digital interface circuits or relay circuits. As shipped from the factory, the port is shipped for inhibit/fault operation. You can change the configuration of the port to operate as a general purpose digital input output port with the following command:

[SOURce:]DIGital:FUNCtion RIDFi DIGio

The following table shows the bin assignments of the mating plug when used in RI/DFImode as well as Digital I/O mode. Refer to Table 1-2 for the electrical characteristics of the port.

Pin	FAULT/INHIBIT

1FLT Output

2FLT Output

3	INH Input
4	INH Common

To program the digital I/O port use:

[SOURce:]DIGital:DATA <data>

DIGITAL I/O

OUT 0

OUT 1

IN/OUT 2

Common

Bit Weight

0

1

2

not programmable

where the data is an integer from 0 to 7 that sets pins 1 to 3 according to their binary weight. Refer to the DIGital:DATA command for more information.

DFI Programming Example

The following program illustrates how to program the DFI port so that it goes low when an OCP condition turns off the output of the unit. To clear an overcurrent condition, the cause of the condition must first be removed and then an OUTput:PROTection:CLEar command must be sent. Note that the status event register will not clear the DFI port until the register is read.

10	!Rev A.00.00
20	ASSIGN @Ps TO 705
30	OUTPUT @Ps;"*RST"	! Sets supply to default values
40	OUTPUT @Ps;"OUTP ON"	! Turn on power supply output

50OUTPUT @Ps;"VOLT 10;CURR .1" ! Program power supply voltage and current

60!

70	OUTPUT @Ld;"CURR:PROT:STAT ON"		! Turn on overcurrent protection
80	OUTPUT @Ld;"OUTP:DFI:STAT	ON"	! Turn on DFI port
90	OUTPUT @Ld;"OUTP:DFI:SOUR	QUES"	! Select DFI bit from Questionable status register

100OUTPUT @Ld;"STAT:QUES:ENAB 2;PTR 2" ! Unmask bit 2 (OCP) on positive transition

110!

120	OUTPUT @Ld;"OUTP:PROT:CLE"	! Clears	the protection circuit
130	OUTPUT @Ld;"STAT:QUES:EVENT?"	! Clears	the Event register and DFI
140	ENTER @Ld;EVENT	! Reads the event and clears the buffer
190	!

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Agilent Technologies 66312A, 6634B Using the Inhibit/Fault Port as a Digital I/O, DFI Programming Example, Fault/Inhibit

Contents

Programming Guide System DC Power SupplyDynamic Measurement DC Source Agilent Models 66312A, 66332APrinting History Safety Guidelines1 - GENERAL INFORMATION Table of Contents2 - INTRODUCTION TO PROGRAMMING 3 - PROGRAMMING THE DC SOURCE4 - LANGUAGE DICTIONARY Status Commands Output CommandsA - SCPI CONFORMANCE INFORMATION C - ERROR MESSAGESB - COMPATIBILITY LANGUAGE D - EXAMPLE PROGRAMSAbout this Guide General InformationDocumentation Summary GPIB References External ReferencesSCPI References Downloading and Installing the Driver VXIplug&play Power Products Instrument DriversIntroduction to Programming Supported ApplicationsGPIB Capabilities of the DC Source Accessing Online HelpRS-232Capabilities of the DC Source GPIB AddressRS-232Programming Example RS-232Flow ControlBaud Rate Introduction to SCPI RS-232TroubleshootingConventions Used in This Guide Multiple Commands in a Message Types of SCPI CommandsUsing Queries Including Common CommandsTypes of SCPI Messages Moving Among SubsystemsThe Message Unit Query IndicatorHeaders Message Unit SeparatorNumerical Data Formats SCPI Data FormatsSuffixes and Multipliers Response Data TypesUsing Device Clear SCPI Command CompletionPage Programming the DC Source Power-onInitializationIntroduction Programming the OutputOutput Current Output VoltageMaximum Voltage Maximum CurrentTriggering Output Changes Setting the Voltage or Current Trigger LevelsSCPI Triggering Nomenclature Output Trigger System ModelGenerating Triggers Initiating the Output Trigger SystemVoltage and Current Measurements Making MeasurementsCurrent Ranges RMS Measurements Agilent 66312A, 66332A OnlyMeasurement Trigger System Model Internally Triggered MeasurementsSCPI Triggering Nomenclature 3 - Programming the DC Source Page Pulse Measurement Queries Current DetectorVarying the Voltage or Current Sampling Rate Controlling Measurement SamplesMultiple Measurements Agilent 66312A, 66332A Only Figure 3-6. Pre-eventand Post-eventTriggering Programming the DC Source Programming the Status Registers Power-OnConditionsRQS ,**$ Table 3-1.Bit Configurations of Status Registers Operation Status GroupSignal CommandStandard Event Status Group Questionable Status GroupStatus Byte Register CommandThe MSS Bit Determining the Cause of a Service InterruptThe RQS Bit The MAV Bit and Output QueueMonitoring Both Phases of a Status Transition Inhibit/Fault IndicatorDiscrete Fault Indicator DFI Remote Inhibit RIDFI Programming Example Using the Inhibit/Fault Port as a Digital I/OFAULT/INHIBIT Bit WeightPage Language Dictionary Subsystem CommandsIntroduction Table 4-1.Subsystem Commands Syntax Table 4-1.Subsystem Commands Syntax continued Table 4-1.Subsystem Commands Syntax continued Programming Parameters Common CommandsTable 4-2.Common Commands Syntax Table 4-3.Output Programming ParametersCALibrate CURRent Calibration CommandsCALibrate CURRent NEGative CALibrate CURRent MEASure LOWRangeCALibrate DATA CALibrate PASSwordCALibrate LEVel CALibrate SAVECALibrate VOLTage CALibrate STATeCALibrate VOLTage PROTection CAL STAT 1,6812 CAL STAT OFFMEASure ARRay CURRent? FETCh ARRay CURRent? Measurement CommandsMEASure ARRay VOLTage? FETCh ARRay VOLTage? MEASure CURRent ACDC? FETCh CURRent ACDC? MEASure CURRent? FETCh CURRent?MEASure CURRent HIGH? FETCh CURRent HIGH? MEASure CURRent MAXimum? FETCh CURRent MAXimum? MEASure CURRent LOW? FETCh CURRent LOW?MEASure CURRent MINimum? FETCh CURRent MINimum? MEASure VOLTage ACDC? FETCh VOLTage ACDC? MEASure VOLTage? FETCh VOLTage?MEASure VOLTage HIGH? FETCh VOLTage HIGH? MEASure VOLTage MAXimum? FETCh VOLTage MAXimum? MEASure VOLTage LOW? FETCh VOLTage LOW?MEASure VOLTage MINimum? FETCh VOLTage MINimum? SENSe CURRent DETector SENSe CURRent RANGeSENS CURR DET ACDC SENSe SWEep OFFSet POINts SENSe FUNCtionSENSe:SWEep:POINts SENSe SWEep TINTervalHANNing SENSe WINDowRECTangular Returned Parameters CRDOUTPut Output CommandsOUTPut DFI OUTPut DFI SOURceOUTPut PON STATe OUTPut PROTection DELayOUTPut PROTection CLEar OUTP PON STAT RSTOUTPut RELay POLarity OUTPut RELayOUTPut RI MODE OUTP REL POL NORMSOURce CURRent TRIGger SOURce CURRentSOURce CURRent PROTection STATe CURR PROT STAT 1CURRENT PROTECTION STATE ONSOURce DIGital FUNCtion SOURce DIGital DATASOURce VOLTage DIG DATASOURce VOLTage ALC BWIDth? SOURce VOLTage ALC BANDwidth?SOURce VOLTage TRIGger SOURce VOLTage PROTectionSTATus PRESet Status CommandsSTATus OPERation? STATus OPERation CONDition?STATUS OPERATION ENABLE? STATus OPERation ENABleSTATus OPERation NTR STATus OPERation PTR STATus QUEStionable? STATus QUEStionable ENABleSTATus QUEStionable CONDition? STAT QUES COND? STATUS QUESTIONABLE CONDITION?Command Syntax STATus QUEStionable NTR STATus QUEStionable PTRPreset Value Related CommandsCommand Syntax Parameters Power-OnValue Examples ESR?Query Syntax Returned Parameters Related Commands Related CommandsPage STB? DISP TEXT DEFAULT MODE System CommandsDISPlay DISPlay MODESYSTem LANGuage SYSTem ERRor?SYSTem VERSion? Query Syntax SYSTem ERRor? Parameters NoneSYSTem:REMote SYSTem LOCalSYSTem RWLock IDN?OPT? TST? ABORt Trigger CommandsINITiate SEQuence INITiate NAME INITiate CONTinuous SEQuence1TRIGger SOURce TRIGgerTRIGger SEQuence2 TRIGger ACQuire TRIGger ACQuire COUNt CURRent TRIGger SEQuence2 COUNt CURRentTRIGger SEQuence2 COUNt VOLTage TRIGger ACQuire COUNt VOLTageTRIGger ACQuire HYSTeresis CURRent TRIGger SEQuence2 HYSTeresis CURRentTRIGger SEQuence2 HYSTeresis VOLTage TRIGger ACQuire HYSTeresis VOLTageTRIGger ACQuire LEVel CURRent TRIGger SEQuence2 LEVel CURRentTRIGger SEQuence2 LEVel VOLTage TRIGger ACQuire LEVel VOLTageTRIGger ACQuire SLOPe CURRent TRIGger SEQuence2 SLOPe CURRentTRIGger SEQuence2 SLOPe VOLTage TRIGger ACQuire SLOPe VOLTageTRIGger SEQuence1 DEFine TRIGger SEQuence2 DEFine TRIGger SEQuence2 SOURce TRIGger ACQuire SOURcePage Non-SCPICommands SCPI Confirmed CommandsSCPI Conformance Information SCPI VersionPage Introduction Compatibility LanguageCompatibility Command Table B-2.COMPatibility CommandsSimilar SCPI Command DescriptionTable B-2.COMPatibility Commands continued Compatibility CommandCommand DescriptionTable B-2.COMPatibility Commands continued Figure B-1.COMpatibility Status Model Page Error Number List Error MessagesError Number Table C-1.Error Numbers continuedError String Description/Explanation/Examples Table C-1.Error Numbers continued Error NumberError String Description/Explanation/Examples Page Assigning the GPIB Address in Programs Example ProgramsTypes of DOS Drivers IntroductionBASIC Controllers Error HandlingExample Programs - D 990’----------------------Merge DECL.BAS here 1225 Example 3. Controller Using BASIC INDEX Index Page maximum, 20 measurements varying voltage or current sampling, 29 voltagewaiting for measurement results XON-XOFF,1111/9/99 Manual Updates1/4/00 All references to HP have been changed to Agilent