Mitsubishi Melsec-L Series User Manual page 110

Remark
The following is the outline of the internal process of an E71 when data is received in the "No Procedure" control method or
by broadcast communications. (The values specified in the buffer memory addresses 0
IP addresses and port numbers of the E71 in the own station as well as those of connected devices.)
Data received
Is the IP address of
the own station E71 the same as that of
the receive data request destination?
Is Destination IP address
FFFFFFFFH?
Is Destination Port No. FFFFH?
The application data of the received data is stored
in the fixed buffer.
Fixed buffer reception status signal
(address: 5005 ) turns on.)
H
*1 When all the bits of the area expressing the host address of the IP address of the receive data request destination are 1,
proceed to "YES".
108
NO
YES
NO
YES
(Simultaneous Broadcast)
NO
YES
(Simultaneous Broadcast)
Is the network address
(subnet address) in the IP address of
the own station E71 the same as the network address
(subnet address) of the received data?
Are all the bits of the host address of
the received data 1?
*1
Is Destination IP address
the same as that of the receive data
Is Destination Port No.
the same as that of the receive data
The received data is ignored (discarded)
because it has not been sent to the own station.
, 1 and 28 to 5F
H H H
YES
request source?
YES
request source?
YES
are used for the
H
NO
NO
NO