Technical data

110 • ETHERNET
Network Architecture – Principles and Regulations
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
RJ45 connector. Other networking components such as hubs, switches or
repeaters can also be used. However, to establish the greatest amount of
“determinism” a switch is recommended.
The use of ETHERNET as a fieldbus allows continuous data transmission
between the plant floor and the office. Connection of the ETHERNET TCP/IP
fieldbus controller to the Internet even enables industrial processing data for
all types of applications to be called up world-wide. This makes site
independent monitoring, visualization, remote maintenance and control of
processes possible.
WAGO Kontakttechnik GmbH is a member of IAONA Europe, an
organization with the purpose of establishing ETHERNET in automation
technology.
5.2 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, one ETHERNET
fieldbus node and one 24 V DC power supply for the coupler voltage source.
Each fieldbus node consists of an ETHERNET TCP/IP fieldbus
coupler/controller, I/O modules, and an end module. The individual bus
modules are connected to the ETHERNET TCP/IP fieldbus coupler/controller
via an internal bus when they are snapped onto the carrier rail.
It is possible to connect 64 I/O modules to an ETHERNET TCP/IP fieldbus
coupler/controller.
Note
Use of the WAGO 750-628 Bus Extension Coupler Module and 750-627
Extension End Module enables support of up to 255 I/O modules on the
750-841 controller.
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.
The fieldbus coupler/controller automatically detects all connected I/O
modules, creating a local process image of them. This can consist of a mixed
arrangement of analog and digital modules.