EtherNet/IP (Ethernet/Industrial Protocol)

本文介绍: protocols.Comm on lay。

EtherNet/IP (Ethernet/Industrial Protocol) is a com m uni cat ion system s ui table for use in
industrial environ ments. Et herNet/IP allows industrial devices to exchange time–crit ical
application in form a t ion. Th ese devices include simple I/O devices suc h as sensors/actuators, as
well as com plex control devices suc h as robots, pro g ram mable logic controllers, wel ders, and
process controllers.
Et herNet/IP uses CIP (Con trol and Information Protocol), the com m on network, transport and
app li cation layers also shared by ControlNet and Devi ceNet. EtherNet/IP then makes use of
standard Ethernet and TCP/IP technology to transport CIP com m uni cations p ackets. The res ult
is a co mm on, open app li cation layer on top of open and highly p op ul ar Ethernet and TCP/IP
protocols.
EtherNet/IP provides a pro ducer/consumer model for the exchange of time–critical control data.
The producer/consumer model allows the exchange of app li cation information between a
sending device (e.g., the producer) and many receiving devices (e.g., the consumers) without
the need to send the data multiple times to multiple destinations. For EtherNet/IP, this is
ac co mp lished by making use of the CIP network and transport layers along with IP Multicast
technology. Many EtherNet/IP devices can receive the same produced piece of app li cation
information from a single producing device.
EtherNet/IP mak es use of standard IEEE 802.3 technology; there are no non–standard additions
that attempt to improve determinism. Rather, EtherNet/IP reco mm ends the use of co mmercial
switch technology, with 100 Mbps bandwidth and full-duplex operation, to provide for more
deterministic performance.
NOTE: EtherNet/IP does not require specific implementation or performance requi rements due
to the broad range of application requi rements. However, work is underway to define a
standard set of EtherNet/IP benchmarks and metrics by which the performance of devices will
be measured. These measurements may become requi red entries within a product’s Electronic
Data Sheet. The goal of such benchmarks and metrics will be to help the user determine the
sui tability of a particular EtherNet/IP device for a specific application.
The figure below illustrates how EtherNet/IP, DeviceNet and ControlNet share the CIP
Common lay