modbus_get_indication_timeout - Man Page

get timeout used to wait for an indication (request received by a server).


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


The modbus_get_indication_timeout() function shall store the timeout interval used to wait for an indication in the to_sec and to_usec arguments. Indication is the term used by the Modbus protocol to designate a request received by the server.

The default value is zero, it means the server will wait forever.

Return Value

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


uint32_t to_sec;
uint32_t to_usec;

/* Save original timeout */
modbus_get_indication_timeout(ctx, &to_sec, &to_usec);

See Also

modbus_set_indication_timeout(3) modbus_get_response_timeout(3) modbus_set_response_timeout(3)


The libmodbus documentation was written by Stéphane Raimbault <>

Referenced By


05/25/2023 libmodbus v3.1.7 libmodbus Manual