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MELSEC-F
SPECIFICATIONS
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3.4 Ethernet Module Function List
This section shows a list of Ethernet module functions.
(1) Basic functions of the Ethernet module
The Ethernet module can perform the communications shown in the table below
via TCP/IP or UDP/IP communication.
via TCP/IP or UDP/IP communication.
(2) Additional functions of the Ethernet module
The following table lists the additional functions of the Ethernet module that can
be used.
be used.
(3) Status check of the Ethernet module
Checks that the Ethernet module is working and can communicate normally.
Function
Description
Reference section
Communication using
MC protocol
MC protocol
Subset of A
compatible 1E
frame
compatible 1E
frame
Reads/writes PLC data from/to an external device.
Chapter 8, 9
Communication using
the fixed buffer
the fixed buffer
Procedure exist Sends/receives arbitrary data between the PLC and the
external device using the fixed buffer of the Ethernet module.
Chapter 6
No procedure
Chapter 7
Sending e-mail
Sends data via e-mail.
• Sending by the PLC
• Sending by the PLC
Chapter 10
Function
Description
Reference section
Router relay communication (router relay
function)
function)
Performs data communication via a router or gateway. (The router
relay function is not a function by which the Ethernet module works as
a router.)
relay function is not a function by which the Ethernet module works as
a router.)
Section 5.3
Existence check of external device (Existence
check function)
check function)
Checks whether or not the external device is working normally after a
connection is established (open processing).
connection is established (open processing).
Subsection 5.2.2 and
Section 5.5
Section 5.5
Communication via pairing open
Pairs and then opens a reception connection and a transmission
connection (for fixed buffer).
Section 5.7
MELSOFT connection (GX Developer, etc.)
Connects MELSOFT products (GX Developer, etc.) via TCP/IP
communication (through the in-house LAN, etc. ). It is possible to
connect multiple MELSOFT products at the same time. It is also
possible to connect multiple MELSOFT products simultaneously.
Section 1.2 (4)
Manual of each
MELSOFT product
MELSOFT product
Function
Description
Reference section
Self loopback test
Checks the Ethernet module's sending/receiving function and line
connection status.
connection status.
Subsection 4.7.1
Hardware test
Tests the RAM and ROM of the Ethernet module.
Subsection 4.7.2
Communication error storage
When a data communication error occurs, this function stores the
error information (error log), including the message subheader and
IP address of the external device for a maximum of 16 pairs in the
buffer memory.
error information (error log), including the message subheader and
IP address of the external device for a maximum of 16 pairs in the
buffer memory.
Chapter 11