Agilent Technologies 664xA, 665xA, 667xA, 668xA, 669xA Status Reporting

Status Reporting 51

4

Status Reporting

Power Supply Status Structure

Figure 4-1 shows the status register structure of the power supply. The Standard Event, Status Byte, and Service Request

Enable registers and the Output Queue perform standard GPIB functions as defined in the IEEE 488.2 Standard Digital

Interface for Programmable Instrumentation. The Operation Status and Questionable Status registers implement status

functions specific to the power supply. Table 4-2 and Figure 4-1 show the bit configuration of each status register.

Operation Status Group

Register Functions

The Operation Status registers record signals that occur during normal operation. The group consists of the following

registers:

• A Condition register that holds real-time status of the circuits being monitored. It is a read-only register.

• A PTR/NTR (positive transition/negative transition) Filter that functions as described under

STAT:OPER:NTR|PTR COMMANDS in "Chapter 3 - Language Dictionary" . This is a read/write register.

• An Event register that latches any condition that is passed through the PTR or NTR filters. Reading the Event

register clears it.

• An Enable register that functions as described und er STAT:OPER:ENAB in "Chapter 3 - Language

Dictionary". This is a read/write register.

The outputs of the Operation Status group are logically-ORed into the OPER(ation) summary bit (7) of the Status Byte

register.

Register Commands

Commands that access this group are derived from the STAT:OPER commands described in "Chapter 3 - Language

Dictionary" and summarized in Table 4-1.

Table 4-1. Status Op eration Commands

Register Command Query Cleared By

Condition (None)

STAT:OPER:COND? Cannot be cleared

PTR Filter STAT:OPER:PTR <NRf>

STAT:OPER:PTR? Programming 0

NTR Filter STAT:OPER:NTR <NRf>

STAT:OPER:NTR? Programming 0 or

STAT:PRES

Event (None)

STAT:OPER:EVEN? Reading or *CLS

Enable STAT:OPER:ENAB <NRf>

STAT:OPER:ENAB? Programming 0

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