MODBUS_RECEIVE(3) Libmodbus Manual MODBUS_RECEIVE(3)NAMEmodbus_receive - receive a indication request
SYNOPSIS
int modbus_receive(modbus_t *ctx, uint8_t *req);
DESCRIPTION
The modbus_receive() function shall receive an indication request from
the socket of the context ctx. This function is used by Modbus
slave/server to receive and analyze indication request sent by the
masters/clients.
If you need to use another socket or file descriptor than the one
defined in the context ctx, see the function modbus_set_socket(3).
RETURN VALUE
The modbus_receive() function shall store the indication request in req
and return the request length if sucessful. The returned request length
can be zero if the indication request is ignored (eg. a query for
another slave in RTU mode). Otherwise it shall return -1 and set errno.
SEE ALSOmodbus_set_socket(3)modbus_reply(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
libmodbus 3.1.0 10/06/2013 MODBUS_RECEIVE(3)