KEYENCE DL-EP1 - Manual (Page 32)

- EtherNet/IP Compatible Network Unit DL-EP1 User’s Manual (SK-1000) -
3-2 DL-EP1 EtherNet/IP Communication Function
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 Cyclic communication
This function sends and receives data between the scanner and DL-EP1 at the set
RPI (Requested Packet Interval). The function can exchange data such as the
sensor amplifier's output signals and judgment values and error status without ladder
programs.
Configurations such as RPI and data size for cyclic communication are set
on the scanner side.
In a network which has many connected devices, including EtherNet/IP
devices, a delay or packet loss could occur if a large load is constantly or
temporarily applied on the network. Verify the settings carefully before
operation.
 Message communication
Message communication can be used for applications which do not require a
punctuality like cyclic communication.
In message communication, various parameters, including data which can be
exchanged with cyclic communication, can be read and written. Functions specific
to sensors such as the sensor amplifier preset function can also be executed.
PLC EtherNet/IP scanner
RPI=3 (ms)* RPI=0.5 (ms)*
RPI=5 (ms)*
RPI=10 (ms)*
Various EtherNet/IP adaptors
Ethernet
* RPI (Requested Packet Interval) can be set
individually for each connection.
Point