Designing and Planning a Network

With PROFINET® IO it is also possible to include wireless parts using WLAN into the network. The only restriction is that the wireless component must support VLAN.

The reaction time will increase if using WLAN, because WLAN has less transfer rate then wired networking.

Caution

:strong:Risk of communication faults!

Ethernet components without VLAN-tag-support will not work properly in PROFINET® IO networks. Make sure that all Ethernet-devices support the VLAN-tag.

Note

Because PROFINET® IO has extremely high requirements on the data transfer, only switches should be used. With hubs there is the possibility of collision on the bus and with that the drop of telegrams, that means a worsening of the reaction time.

• Topologies
  • Star
  • Tree
  • Bus (also called line)
• Parallel operation of different PROFINET® IO systems in one network