Agilent Technologies C-Size VXIbus Systems Manual do Utilizador descarregar pdf (Página 145)

#include <stdio.h>

#include <sicl.h>

#define SICL_NULL (INST) 0

INST instrument;

int main(void)

{

char result[100];

instrument = iopen("hpib,9,3");

if (instrument == SICL_NULL)

{

printf("Error opening logical address\n");

exit(1);

}

ipromptf(instrument, "*RST;*IDN?\n", "%t", result);

/* eliminate line feed from string */

result[strlen(result) - 1] = ’\0’;

printf("*IDN? returned: %s\n", result);

iclose(instrument);

exit(0);

}

COMM1D : C-SCPI

Addressing

In systems using Compiled SCPI (C-SCPI), the VXI instrument logical

address is used to open a communication channel between the computer and

the instrument. For example,

INST_OPEN(vm,"vxi,24");

opens a communication channel between the computer and the instrument

(voltmeter) at logical address 24.

Sending the *IDN?

Command

The following C-SCPI program sends the *IDN? command to the

Agilent E1411B multimeter to verify communication between the computer

and the VXI mainframe. As an example, execution of the *IDN? command

may return:

HEWLETT-PACKARD,E1411B,0,B.05.00

C-Size Configuration Guide System Programming and Debugging 6-5

1 2 ... 140 141 142 143 144 145 146 147 148 149 150 ... 177 178

Sem comentários

Agilent Technologies C-Size VXIbus Systems Manual do Utilizador Página 145