Agilent Technologies 664xA, 665xA, 667xA, 668xA, 669xA *ESR?, *IDN?, *OPC

28 Language Dictionary

*ESR?

Meaning and Type

Event Status Register Device Status

Description

This query reads the Standard Event Status Event register. Reading the register clears it. The bit configuration of this

register is the same as the Standard Event Status Enable register (*ESE). See "Chapter 4 - Status Reporting" for a detailed

explanation of this register.

Query Syntax *ESR?

Parameters (None)

Returned Parameters <NR1> (Register binary value)

Related Commands *CLS *ESE *ESE? *OPC

*IDN?

Meaning and Type

Identification System Interface

Description

This query requests the power supply to identify itself. It returns a string composed of four fields separated by commas.

Query Syntax *IDN?

Returned Parameters <AARD>

Field Information

Hewlett-Packard Manufacturer

xxxxA 4-digit model number followed by a letter

nnnnA-nnnnn 10-character serial number or 0

<R>.xx.xx Revision levels of firmware

Example Hewlett-Packard,6681,0,A.00.01

Related Commands (None)

*OPC

Meaning and Type

Operation Complete Device Status

Description

This command causes the interface to set the OPC bit (bit 0) of the Standard Event Status register when the power supply

has completed all pending operations. (See *ESE for the bit configuration of the Standard Event Status register.) Pending

operations are complete when:

• All commands sent before *OPC have been executed. This includes overlapped commands. Most commands

are sequential and are completed before the next command is executed. Overlapped commands are executed in

parallel with other commands. Commands that affect output voltage, current or state, relays, and trigger actions are

overlapped with subsequent commands sent to the power supply. The *OPC command provides notification that

all overlapped commands have been completed.

• Any change in the output level caused by previous commands has been completed (completion of settling

time, relay bounce, etc.)

• All triggered actions are completed

*OPC does not prevent processing of subsequent commands, but Bit 0 will not be set until all pending operations are

completed.

Command Syntax *OPC

Parameters (None)

Related Commands *OPC? *WAI

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