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MODBUS_STRERROR(3) libmodbus Manual MODBUS_STRERROR(3) NAME 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 Display 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 Stphane Raimbault <stephane.raimbault@gmail.com> libmodbus v3.1.7 04/12/2025 MODBUS_STRERROR(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLE | SEE ALSO | AUTHORS
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