modbus_strerror man page

modbus_strerror — return the error message

Synopsis

const char *modbus_strerror(*int errnum);

Description

The modbus_strerror() function shall return a pointer to an error message string corresponding to the error number specified by the errnum argument. As libmodbus defines additional error numbers over and above those defined by the operating system, applications should use modbus_strerror() in preference to the standard strerror() function.

Return Value

The modbus_strerror() function shall return a pointer to an error message string.

Errors

No errors are defined.

Example

Displaying an error message when a Modbus connection cannot be established.

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

See Also

linkmb:libmodbus

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

Referenced By

libmodbus(7).

04/02/2014 libmodbus 3.0.6 Libmodbus Manual