Ethernet/Ip (Ethernet/Industrial Protocol); General - WAGO 750 Series Manual

7 Ethernet/IP (Ethernet/Industrial Protocol)

7.1 General

Ethernet/IP is a communication system that enables devices to exchange time-
critical application data in an industrial environment. The spectrum of devices
ranges from simple I/O devices (e.g., sensors) through to complex controllers
(e.g., robots).
Ethernet/IP uses CIP (Control and Information Protocol), which is
implemented on the fourth layer in the ISO/OSI reference model (transport
layer), and is also used by DeviceNet and ControlNet. Therefore, converting
from one of these protocols to Ethernet/IP is easy to do.
Ethernet/IP uses the standard Ethernet and TCP/IP technology (IEEE 802.3) to
transmit the CIP communication packets.
In order to clarify the interrelationships between DeviceNet, ControlNet and
Ethernet/IP, the following diagram presents the associated ISO/OSI reference
model.
(e.g. positioning controllers, semi-conductors, pneumatic valves)
7 Application
6 Presentation
5 Session
4 Transport
3 Network
2 Data Link
1 Physical
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Application device profiles
layer
layer (explicit messages, I/O messages)
CIP message routing, connection management
layer
DeviceNet or ControlNet
layer
(transmission control,
addressing)
layer
CAN (CSMA/NBA) or
layer ControlNet (CTDMA)
DeviceNet or ControlNet
layer physical interface
Ethernet/IP (Ethernet/Industrial Protocol)
CIP application object library
CIP data management services
transport
physical interface
General
Encapsulation
protocol
TCP UDP
IP
ETHERNET/IP
Ethernet
(CSMA/CD)
Ethernet
• 187
CIP