164 Fieldbus Communication
11.2.2
Protocol overview in the OSI model
In order to clarify the interrelationships between DeviceNet, ControlNet and
EtherNet/IP, the following diagram presents the associated ISO/OSI reference
model.
Table 84: ISO/OSI reference model
7
Application
Layer
6
Presentation
Layer
5
Session
Layer
4
Transport
Layer
3
Network
Layer
2
Data Link
Layer
1
Physical
Layer
Manual
Version 1.0.0
750-363/0040-0000 FC EtherNet/IP G4 ECO XTR
Object Library
(Communications, Applications, Time Synchronization)
Data Management Services
Explicit and I/O Messages
Connection Management, Routing
TCP/UDP
CompoNet
Network and Transport
Internet
Protocol
Ethernet
CompoNet
CSMA/CD
Time Slot
Ethernet
CompoNet
WAGO-I/O-SYSTEM 750
Safety Object Library
Safety Services and
Messages
ControlNet
DeviceNet
Network and
Network and
Transport
Transport
ControlNet
CAN
CTDMA
CSMA/NBA
ControlNet
DeviceNet