NAME

       modbus_connect - establish a Modbus connection

SYNOPSIS

       int modbus_connect(modbus_t *ctx);

DESCRIPTION

       The modbus_connect() function shall etablish a connection to a Modbus server, a network or
       a bus using the context information of libmodbus context given in argument.

RETURN VALUE

       The modbus_connect() function shall return 0 if successful. Otherwise it shall return -1
       and set errno to one of the values defined by the system calls of the underlying platform.

EXAMPLE

           modbus_t *ctx;

           ctx = modbus_new_tcp("127.0.0.1", 502);
           if (modbus_connect(ctx) == -1) {
               fprintf(stderr, "Connection failed: %s\n", modbus_strerror(errno));
               modbus_free(ctx);
               return -1;
           }

SEE ALSO

       modbus_close(3)

AUTHORS

       The libmodbus documentation was written by Stéphane Raimbault
       <stephane.raimbault@gmail.com[1]>

NOTES

        1. stephane.raimbault@gmail.com
           mailto:stephane.raimbault@gmail.com