NAME

       modbus_set_response_timeout - set timeout for response

SYNOPSIS

       int modbus_set_response_timeout(modbus_t *ctx, uint32_t to_sec, uint32_t to_usec);

DESCRIPTION

       The modbus_set_response_timeout() function shall set the timeout interval used to wait for
       a response. When a byte timeout is set, if elapsed time for the first byte of response is
       longer than the given timeout, an ETIMEDOUT error will be raised by the function waiting
       for a response. When byte timeout is disabled, the full confirmation response must be
       received before expiration of the response timeout.

       The value of to_usec argument must be in the range 0 to 999999.

RETURN VALUE

       The function shall return 0 if successful. Otherwise it shall return -1 and set errno.

ERRORS

       EINVAL
           The argument ctx is NULL, or both to_sec and to_usec are zero, or to_usec is larger
           than 1000000.

EXAMPLE

           uint32_t old_response_to_sec;
           uint32_t old_response_to_usec;

           /* Save original timeout */
           modbus_get_response_timeout(ctx, &old_response_to_sec, &old_response_to_usec);

           /* Define a new timeout of 200ms */
           modbus_set_response_timeout(ctx, 0, 200000);

SEE ALSO

       modbus_get_response_timeout(3) modbus_get_byte_timeout(3) modbus_set_byte_timeout(3)

AUTHORS

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