KEPCO BOP-GL 1KW Operator Manual Firmware Ver.3.05 and higher - Manual (Page 109)

BOP-1K-GL 022814
3-47
NOTE: If External Reference is enabled and a protection error occurs, both Voltage Protect
Error (bit 12) and Current Protect Error (bit 13) are set
• 13 - Current Protect Error — 1 indicates a Current protection error has been detected.
• 14 - Sinking — 1 indicates the unit is absorbing energy from the load.
• 15 Not Used — always zero.
3.7.8 SCPI PROGRAM EXAMPLES
Refer to Appendix B, Figures B-1 through B-13 for examples illustrating the use of SCPI com-
mands.
Figure 3-12 is an example of a program using SCPI commands to program the BOP Power
Supply. The program illustrated is for a configuration using an IBM PC or compatible with a
National Instruments GPIB interface card. (It will be necessary to consult the manufacturer’s
data to achieve comparable functions with an interface card from a different manufacturer.) This
program sets output voltage (Voltage mode) or voltage limit (Current mode) to 5V, and current
limit (Voltage mode) or output current (Current mode) to 1A, then reads the measured (actual)
voltage and current, then prints the measurements.
FIGURE 3-12. TYPICAL EXAMPLE OF BOP 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
#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
}