KEYENCE DL-EP1 - Manual (Page 50)

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- EtherNet/IP Compatible Network Unit DL-EP1 User’s Manual (SK-1000) -
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Message Communication
This section describes the message communication functions and how to use them.
 What is Message communication (Explicit messaging)?
Message communication is a function that performs communication by issuing
commands using the objects and services (Service Codes) prepared for each
EtherNet/IP device. Message communication is used for applications which do not
require the punctuality of cyclic communication, such as reading and writing adaptor
settings.
The objects and service codes which can be used with message communication
include those which are specified as a standard and those which are unique to the
device. You can use the objects and services unique to the DL-EP1 to monitor data,
to read and write parameters, and to perform operations such as reset.
The DL-EP1 message communication function supports CIP-defined
UCMM (unconnected) and Class 3 (connected) message communication.
Scanner DL-EP1 Sensor amplifier
Send
Receive
Receive
Send
(1) Message communication
command
(3) Message communication
response
(2) Interpret and
execute command
Reference