User Manual

SIGELNT
54 SPD1000X User Manual
char * cmmand ="*IDN?\n";
status = viPrintf (instr, cmmand);
if (status < VI_SUCCESS)
{
printf ("Error writing to the device %d.\n", i+1);
status = viClose (instr);
continue;
}
/** Now we will try to read back the response of a device information query from the
device. We will use the viScanf function to get the data. After the data is read out, the
response is displayed */
status = viScanf(instr, "%t", buffer);
if (status < VI_SUCCESS)
printf ("Error reading a response from the device %d.\n", i+1);
else
printf ("\nDevice %d:%*s\n", i+1,retCount, buffer);
status = viClose (instr);
}
/** We will now close the session using the viClose instrument. This action frees up
all system resources */
Return 0
}
（2） Based on the LAN port code
Write a TCP_IP_Test function.
int TCP_IP_Test (char * pIP)
{
char outputBuffer[VI_FIND_BUFLEN];
ViSession defaultRM, instr;
ViStatus status;
ViUInt32 count;
ViUInt16 portNo;
status = viOpenDefaultRM (&defaultRM);
if (status < VI_SUCCESS)
{
printf("Could not open a session to the VISA Resource Manager!\n");
}
char head[256] ="TCPIP0::";
char tail[] ="::INSTR";
char resource [256];
strcat(head,pIP);
strcat(head,tail);