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Sending Commands to the HP 16500C Socket

If you are programming in C, you can use a socket to communicate with the

HP 16500 system. By opening a socket connection, you can send program

commands directly to the command parser. The HP 16500C system socket

port identification number is 5025.

You can also connect directly to the parser socket and type commands

directly to the HP 16500. The second example uses telnet to connect to the

parser socket.

Example The following C program opens a socket and sends a query to request the

instrument’s identity. If someone else is already connected as control user,

the socket will eventually close without receiving a response.

#include <stdio.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

typedef struct sockaddr_in tdSOCKET_ADDR;

#define PARSER_PORT 5025

#define SERV_HOST_ADDR "15.10.96.12"

#define PARSER_BUFFER_SIZE 100

char receiveBuffer[PARSER_BUFFER_SIZE],

*cmdString = { "*IDN?\r\n" };

main ()

{

int sockfd,

port;

tdSOCKET_ADDR serv_addr;

char *addr;

/* Initialize a server socket */

port = PARSER_PORT;

addr = SERV_HOST_ADDR ;

serv_addr.sin_family = AF_INET;

serv_addr.sin_addr.s_addr = inet_addr ( addr );

serv_addr.sin_port = htons ( port );

Programming Over LAN

Sending Commands to the HP 16500C Socket

4–11

HP 16500C Programmer's Guide

Other manuals for HP 16500C