Mitsubishi Electric MELSEC iQ-F Series User Manual page 37

Server function
With the Class3 message communication server function, when the FX5-ENET/IP receives a command request from an
EtherNet/IP device, the FX5-ENET/IP executes the command processing and returns the command response.
FX5-ENET/IP
Server
(1)
(5)
(1) Turn on 'EtherNet/IP communication start request' (Un\G37.b0)
(2) Connection open
(3) Response (normal)
(4) Command request
(5) Command processing execution
(6) Command response
Class3 message communications with the server function is performed according to the following procedure.
1.
Connection establishment ((1) to (3) shown above)
The connection is established when 'EtherNet/IP communication start request' (Un\G37.b0) of the FX5-ENET/IP on the server
side is turned on, a connection open request is received from the EtherNet/IP device on the client side, and then a response
is returned.
2.
Command request acceptance and response ((4) to (6) shown above)
If the connection is established normally, a command request is sent from the EtherNet/IP device with arbitrary timing.
When the FX5-ENET/IP receives the command request from the EtherNet/IP device, the FX5-ENET/IP executes the
command processing and returns the command response to the EtherNet/IP device.
For the operation timing of EtherNet/IP communications, refer to the following.
Page 139 Operation timing of EtherNet/IP communications
EtherNet/IP device
Client
(2)
(3)
(4)
(6)
4 FUNCTION
4.2 EtherNet/IP Communication Functions
4
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