Coupler Modules - WAGO -I/O-SYSTEM 750 Technical Description, Installation And Configuration

4.1.2.3

Coupler Modules

There are a number of hardware modules that allow for flexible arrangement
for setting up an ETHERNET network. They also offer important functions,
some of which are very similar.
The following table defines and compares these modules and is intended to
simplify the correct selection and appropriate application of them.
Module
Repeater
Bridge
Switch
Hub
Router
Gateway
Tab. 4-2: Comparison of Coupler Modules for Networks
WAGO-I/O-SYSTEM 750
PROFINET IO
Characteristics/application
Amplifier for signal regeneration, connection on a physical level. 1
Segmentation of networks to increase the length.
Multiport bridge, meaning each port has a separate bridge
function.
Logically separates network segments, thereby reducing network
traffic.
Consistent use makes ETHERNET collision-free.
Used to create star topologies, supports various transmission
media, does not prevent any network collisions.
Links two or more data networks.
Matches topology changes and incompatible packet sizes (e.g.
used in industrial and office areas).
Links two manufacturer-specific networks which use different
software and hardware (i.e., ETHERNET and Interbus-Loop).
Fieldbus Communication
ETHERNET
• 115
ISO/OSI
layer
2
2 (3)
2
3
4-7