MAT FULL RACK/022300
3-7
FIGURE 3-4. TYPICAL EXAMPLE OF MAT POWER SUPPLY PROGRAM USING SCPI COMMANDS
/**************************************************************************/
/* Sample Program For KEPCO power supply, using National Instruments */
/* GPIB interface card and IBM PC or compatible computer */
/**************************************************************************/
#include <stdio.h>
#include "decl.h"
char rd_str[80];
// Input buffer
char dat_str[80];
// Output buffer
int bd,adr;
main() {
adr = ibfind("DEV6");
// Open DEV6 (defined by IBCONF)
bd = ibfind ("GPIB0");
// Open GPIB card
ibsic (bd);
// Send Interface Clear
ibsre(bd,1);
// Set remote line true
strcpy(dat_str,"VOLT 5;CURR 1");
// Define a set command
strcat(dat_str,"\r\n");
// Append delimiter
ibwrt(adr,dat_str,strlen(dat_str));
// Send string to power supply
strcpy(dat_str,"MEAS:VOLT?;CURR?");
// Define a measure command
strcat(dat_str,"\r\n");
// Append delimiter
ibwrt(adr,dat_str,strlen(dat_str));
// Send string to power supply
strset(rd_str,'\0');
// Clear input buffer
ibrd(adr,rd_str,64);
// Read result of measure
printf("received : %s\n",rd_str);
// Print voltage and current
}
