Network Architecture - Principles And Regulations - WAGO 750-370 Manual

4.1.2 Network Architecture – Principles and Regulations
A simple ETHERNET network is designed on the basis of one PC with a
network interface card (NI), one crossover connection cable (if necessary),
one ETHERNET fieldbus node and one 24 V DC power supply for the
coupler/controller voltage source.
Each fieldbus node consists of a (programmable) fieldbus coupler or
controller and a number of needed I/O modules.
Sensors and actuators are connected to the digital or analog I/O modules on
the field side. These are used for process signal acquisition or signal output to
the process, respectively.
Fig. 4-1. Connection Example and Principle of a Fieldbus Node for a Network Architecture
Fieldbus communication between master application and (programmable)
fieldbus coupler or controller takes place using the implemented fieldbus
specific application protocol, e. g. MODBUS TCP (UDP), EtherNet/IP,
BACnet, KNXNET/IP, PROFINET, Powerlink, SERCOS III or others.
WAGO-I/O-SYSTEM 750
PROFINET IO
Fieldbus Communication
ETHERNET
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