Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 153)

Publication 1753-UM001C-EN-P - March 2010 153
Peer-to-peer Communication Overview Chapter 16
Network Configuration Communication between GuardPLC controllers can be established via
different kinds of Ethernet topologies. Both the HH protocol and the
peer-to-peer protocol can be adapted to the network in use, to allow
smooth and efficient data transfer.
You configure the HH protocol and the peer-to-peer protocol by
setting parameters, either manually or with the help of network
profiles. Network profiles are preset combinations of parameters you
can choose to make configuration simpler.
To optimize data transfer and customize the configuration, you must
have an extensive knowledge of the network in use and the operation
of the parameters. The following sections summarize the most
important HH and peer-to-peer protocol parameters.
HH Protocol Parameters The HH protocol parameters are displayed in the HH Network/Token
Group dialog box. They can be preset by choosing one of two
profiles.
•
Fast
•
Medium
The profiles are explained in HH Network Profiles on page 161 .
TIP
While manual changes to the parameters are possible by
choosing the None profile, keep in mind that ill-considered
changes can disable communication completely.