Using the Status Registers
The following example shows how you can use the multimeter’s status
registers to determine when a command sequence is completed. For
more information, see “The SCPI Status Model,” starting on page 134.
The example is shown in HP BASIC and QuickBASIC (
see page 190
).
10 REAL Aver,Min_rdg,Max_rdg
20 INTEGER Val,Hpib,Mask,Task
30 ASSIGN @Dmm TO 722
40 CLEAR 7
! Clear HP-IB and dmm
50 OUTPUT @Dmm; "*RST"
! Reset dmm
60 OUTPUT @Dmm; "*CLS"
! Clear dmm status registers
70 OUTPUT @Dmm; "*ESE 1" ! Enable "operation complete" bit to set
! "standard event" bit in status byte
80 OUTPUT @Dmm; "*SRE 32" ! Enable "standard event" bit in status byte
! to pull the IEEE-488 SRQ line
90 OUTPUT @Dmm; "*OPC?"
! Assure synchronization
100 ENTER @Dmm; Val
110 !
120 ! Configure the multimeter to make measurements
130 !
140 OUTPUT @Dmm; "CONF:VOLT:DC 10" ! Set dmm to 10 volt dc range
150 OUTPUT @Dmm; "VOLT:DC:NPLC 10" ! Set the integration time to 10 PLCs
160 OUTPUT @Dmm; "TRIG:COUN 100" ! Dmm will accept 100 triggers
170 OUTPUT @Dmm; "CALC:FUNC AVER;STAT ON" ! Select min-max and enable math
180 OUTPUT @Dmm; "INIT"
! Place dmm in "wait-for-trigger" state
190 OUTPUT @Dmm; "*OPC"
! Set "operation complete" bit in standard event
! registers when measurement is complete
200 !
210 Hpib=7
220 ON INTR Hpib GOSUB Read_data
230 Mask=2
! Bit 1 is SRQ
240 ENABLE INTR Hpib;Mask ! Enable SRQ to interrupt the program
250 !
260 ! Execute other tasks while waiting for data
270 !
HP-IB Operation Using HP BASIC
Continued on next page
Chapter 6 Application Programs
Using the Status Registers
188
Summary of Contents for 34401A
Page 12: ...1 Quick Start 1 ...
Page 26: ...2 Front Panel Menu Operation 2 ...
Page 50: ...3 Features and Functions 3 ...
Page 103: ...4 Remote Interface Reference 4 ...
Page 135: ...SCPI Status System 4 Chapter 4 Remote Interface Reference The SCPI Status Model 135 ...
Page 170: ...5 Error Messages 5 ...
Page 182: ...6 Application Programs 6 ...
Page 196: ...7 Measurement Tutorial 7 ...
Page 214: ...8 Specifications 8 ...