Ucmm Message Communications - Mitsubishi Electric MELSEC iQ-R Series User Manual

UCMM message communications

Function overview
UCMM message communications is a function for performing message communications between the RJ71EIP91 and an
EtherNet/IP device by specifying the message communication destination with an instance ID and not by establishing a
connection.
UCMM message communication supports the client and server functions.
With the client function, the buffer memory is used to communicate with arbitrary timing. ( Page 39 Client function)
With the server function, message communication support commands are used to communicate with arbitrary timing. (
Page 40 Server function)
• Client function
Client
RJ71EIP91
'UCMM data link request command (1st)'
(Un\G393280 to Un\G394047)
'UCMM data link receive command (1st)'
(Un\G394048 to Un\G394815)
• Server function
Server
Message communication support commands
Items such as data and parameters can be read and written with message communication support commands.
For details on message communication support command objects, refer to the following.
Page 157 Details of Message Communication Support Command
1 FUNCTIONS
38
1.1 EtherNet/IP Communication Functions
Command request
Command response
Buffer memory
Command request
Command response
Server
Client