Agilent Technologies 664xA, 665xA, 667xA, 668xA, 669xA - page 20

Remote Programming 21

Programming Some Power Supply Functions

SAMPLE FOR POWER SUPPLY AT STAND-ALONE ADDRESS 6. SEQUENCE SETS UP CV MODE OPERATION,

FORCES SUPPLY TO SWITCH TO CC MODE, AND DETECTS AND REPORTS MODE CHANGE.

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Controller Using Agilent 82335A Interface

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5 ‘ < --------------- Merge SETUP.BAS here -------------------- >

1000 MAX.ELEMENTS=2 : ACTUAL.ELEMENTS=O :MAX.LENGTH=80 :ACT.LENGTH=O

1005 DIM OUTPUTS(2) :CDDES$=SPACE$(40)

1010 ISC=7 :PS=706

1015 ‘

1020 'Set up the Power Supply Interface for DOS driver

1025 CALL IORESET (ISC) 'Reset the interface

1030 IF PCIB.ERR < > NOERR THEN ERROR PCIB.BASERR

1035 TIMEOUT=3

1040 CALL IOTIMEOUT (ISC, TIMEOUT) 'Set timeout to 3 seconds

1045 IF PCIB.ERR < > NOERR THEN ERROR PCIB.BASERR

1050 CALL IOCLEAR (ISC) 'Clear the interface

1055 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR

1060 CALL IOREMOTE (ISC) 'Set Power Supply to remote mode

1065 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR

1070 ‘

1075 'Program power supply to CV mode with following voltage and current

1080 CODES$ = "VOLTAGE 7.8;CURRENT 480" :GOSUB 2000

1085 ‘

1090 'Query power supply outputs & print to screen

1095 CODES$ = "MEASURE:VOLTAGE?;CURRENT?" :GOSUB 2000 :GOSUB 3000

1100 VOUT = OUTPUTS(I)

1105 IOUT = OUTPUTS(2)

1110 PRINT "The output levels are "VOUT" Volts and "IOUT" Amps"

1115 ‘

1120 'Program triggered current level to value insufficient to maintain

1125 'supply within its CV operating characteristic

1130 CODES$ = "CURR:TRIG 50" :GOSUB 2000

1135 ‘

1140 'Set operation status mask to detect mode change from CV to CC

1145 CODES$ = "STAT:OPER:ENAB 1024;PTR 1024" :GOSUB 2000

1150 ‘

1155 'Enable Status Byte OPER summary bit

1160 CODES$ = "*SRE 128" :GOSUB 2000

1165 ‘

1170 'Arm trigger circuit and send trigger to power supply

1175 CODES$ = "INITIATE;TRIGGER" :GOSUB 2000

1180 ‘

1185 'Wait for supply to respond to trigger

1190 FOR I= 1 to 100 :NEXT I

1195 ‘

1200 'Poll for interrupt caused by change to CC mode and print to screen

1205 CALL IOSPOLL (PS,RESPONSE)

1210 IF (RESPONSE AND 128)< >128 THEN GOTO 1240 'No OPER event to report

1215 CODES$ = "STATUS:OPER:EVEN?" :GOSUB 2000 'Query status oper register

Contents

Main Safety Guidelines Printing History Contents GENERAL INFORMATION 7 REMOTE PROGRAMMING 9 LANGUAGE DICTIONARY 25 Page STATUS REPORTING 51 ERROR MESSAGES 59 SCPI CONFORMANCE INFORMATION 61 COMPATIBILITY LANGUAGE 63 INDEX 67 General Information About this Guide Documentation Summary Users Guide External Documents Prerequisites for Using this Guide VXIplug&play Power Product Instrument Drivers Downloading and Installing the Driver Accessing Online Help Remote Programming GPIB Capabilities Of The Power Supply Introduction To SCPI lmportant Note SCPI Messages Types of SCPI Commands Structure of a SCPI Message Parts of a SCPI Message Note Shortform headers result in faster program execution. Important Traversing the Command Tree Page Note Including Common Commands SCPI Queries Value Coupling SCPI Data Formats Examples Note controlled GPIB interfaces. Controlling the Output Important Saving and Recalling States Note Writing to the Display Programming Status Note The last query string can be handled without difficulty. However, should you request too many System Considerations The GPIB Address Note DOS Drivers Important Agilent BASIC Controllers Sample Program Code Page Page Page Page Language Dictionary Introduction Parameters Related Commands Order of Presentation Description Of Common Commands *CLS *ESE *ESR? *IDN? *OPC *OPC? *OPT? *PSC *RCL *RST *SAV *SRE *STB? *TRG *TST? *WAI Description of Subsystem Commands ABOR Calibration Commands Current Subsystem CURR CURR:TRIG CURR:PROT:STAT DIG:DATA Displa y Subsyst em DISP DISP:MODE DISP:TEXT enclosed in either single () or double (") quotes. Note Initiate Subsystem INIT INIT:CONT Measure Subsystem MEAS:CURR? MEAS:VOLT? Output Subsystem OUTP OUTP:PROT:CLE OUTP:PROT:DEL OUTP:REL OUTP:REL:POL Status Subsystem STAT:PRES Status Operation Registers Note STAT:OPER? STAT:OPER:ENAB STAT:OPER NTR STAT:OPER PTR Note events in the corresponding Operation Event register. Status Questionable Registers STAT:QUES? STAT:QUES:COND? STAT:QUES:ENAB STAT:QUES NTR STAT:QUES PTR System Commands SYST:ERR? SYST:LANG SYST:VERS? Trigger Subsystem TRIG TRIG:SOUR Voltage Subsystem VOLT VOLT:TRIG VOLT:PROT Command Summary Page Programming Parameters Note Characteristics in the Operating Guide. Status Reporting Power Supply Status Structure Operation Status Group Page Questionable Status Group Standard Event Status Group Status Byte Register The RQS Bit The MSS Bit Determining the Cause of a Service Interrupt Service Request Enable Register Examples Note information about encoding the commands as language strings. Servicing an Operation Status Mode Event Adding More Operation Events Servicing Questionable Status Events Monitoring Both Phases of a Status Transition SCPI Command Completion Note Techniques" in ANSI/IEEE Std 488.2. DFI (Discrete Fault Indicator) RI (Remote Inhibit) Error Messages Power Supply Hardware Error Messages Calibration Error Messages System Error Messages Page A SCPI Conformance Information Note See Chapter 3 - Language Dictionary for command syntax. SCPI Version SCPI Confirmed Commands NON-SCPI Commands B Compatibility Language Note commands. You can use only a GPIB primary address for the power supply. Note Page Page Page Index 67 Index A C D E K L M N O T U V W Agilent Sales and Support Office