NAME¶

modbus_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. Otherwise it shall return -1 and set errno.

SEE ALSO¶

modbus_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