3-20
BHK-MG (OPR) 032816
FIGURE 3-2. PROGRAMMING EXAMPLE TO VERIFY PREVIOUS COMMAND HAS COMPLETED
3.4
RS232-C OPERATION
The BHK-MG may be operated via an RS232-C terminal, or from a PC using a terminal emula-
tion program. The default settings are as follows:
•
Baud rate: 9600
•
Parity:
None
•
Data Bits
8
•
Stop Bits
1
•
Echo
ON
•
XON
OFF
#include <formatio.h>
#include <utility.h>
#include <gpib.h>
#include <ansi_c.h>
/*Overhead for the use of a NATIONAL INSTRUMENTS gpib interface */
int unit_desc;
// handle for the national instruments controller
int GPIbus=0;
// GPIB card 0
int adr=6;
// Power Supply address
char status_byte;
// status byte from the power supply
#define MAV 0x10 /* bit 4 of the status byte is the Message AVailable bit by 488.2 specification */
/* Function Send_with_wait
INPUT: string to be sent to power supply
Description: adds the *OPC? query and performs serial polls to wait for the command to be completed.
*/
int Send_with_wait(char *command);
char snd[501];
// data to be sent to the power supply
char rcv [10];
// data from power supply
int j;
sprintf(snd,”%s;:*OPC?,command);
// Add *OPC? to the command
// so there is a response from the
// power supply
Send(GPIbus, adr, snd, strlen(snd), 2);
// Send the data to the power supply
for (j=0;j<500;j++)(
// loop until ready (5 seconds max)
Delay(.05);
// Wait for command to complete
ibrsp(unit_desc,&status_byte);
// get status byte
if ((status_byte& 0x10) ==0x10) break;)
// by looking for data in string
Receive (GPIbus, adr, rev, rev_buf_size,10);
// so the error queue will not receive a 410 error
}
main(
// test code to show operation of function.
unit_desc=ibdev(GPIbus,adr,adr/256,T100ms,1,0x40a);Delay(.005);
Send (GPIbus,adr,”VOLT 10;curr .01”,sizeof(“VOLT 10;curr .01”),NLEND;
Send_with_wait(“*SAV 10”);
}
Summary of Contents for BHK 1000-0.2MG
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Page 17: ...BHK MG032816 xi FIGURE 1 1 BHK MG SERIES PROGRAMMABLE POWER SUPPLY ...
Page 18: ...xii BHK MG032816 ...
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Page 101: ...BHK MG OPR 032816 3 55 FIGURE 3 20 SERIES AUTOMATIC CONFIGURATION ...
Page 109: ...BHK MG OPR 032816 3 63 FIGURE 3 23 PARALLEL AUTOMATIC CONFIGURATION ...
Page 114: ...3 68 BHK MG OPR 032816 FIGURE 3 25 PARALLEL MASTER SLAVE CURRENT MODE CONFIGURATION ...
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