5 - 2
COMMUNICATION PROCEDURE5
5 - 2
MELSEC-F
5
NOTE
The following communication can be performed with an open device on other end.
• Communication using MC protocol
• Sending/receiving in fixed buffer communication (procedure exists)
Request from an external
device (receive)
Header
Ethernet
IP
TCP
Sub header
Application
data
Response to the request (send)
Header
Ethernet
IP
TCP
Sub header
Application
data
Ethernet modulePLC
(Subheader code)
When receiving communication request data from an external device
Store data
received
Fixed buffer communication
(Procedure exists)
(communication)
Communication using
the MC protocol
(read/write)
Device memory, etc.
Data
00 to 05
H
13 to 16H
80 to 85H
93 to 96H
OS
Confirm the
request contents
with the
subheader.
E0
H
60H
* For receiving when the
communication is open
Receive completion signal
Receive data acquisition
processing
Receive data normal
completion BFM operation
Head
Head
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