Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 172)

F ACTORY T ALK V IEW S ITE E DITION U SER ’ S G UIDE
9–2
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 Alias topics (multiple paths to the same device) are required.
About FactoryTalk Live Data
FactoryTalk Live Data manages connections between data servers in an application and
FactoryTalk Live Data clients such as FactoryTalk View SE clients.
FactoryTalk Live Data provides data using web and security friendly TCP/IP protocol and
enables faster disconnect and reconnect.
FactoryTalk View SE has an HMI Tag database, which also uses FactoryTalk Live Data to
communicate with FactoryTalk View SE clients.
FactoryTalk Live Data is one of the common services installed with the FactoryTalk
Services Platform. For information about other FactoryTalk services, see page 1-1.
Using multiple data servers in an application
A FactoryTalk View SE application can use multiple data servers to:
 Provide redundancy.
Redundancy is only supported in network applications. To provide redundancy, set up
a secondary data server on another computer. On the primary data server’s computer,
change the settings in the Redundancy tab of the server’s Properties dialog box, to
switch clients to the secondary server if the primary one fails.
 Communicate with non-Rockwell Automation controllers.
For example, (1) Data server - RSLinx Enterprise, communicating with Logix
Controllers over EtherNet/IP. (2) OPC Data Server - KEPServer Enterprise
communicating with a Siemens S7-300 over ProfiNet.
 Balance loading.
If CPU usage is high on a computer running one data server, create another data
server on another computer to balance the processing load.
Network applications can use multiple RSLinx Enterprise and OPC data servers, located
on different computers on the network.
If RSLinx Classic runs on the same computer as FactoryTalk View SE Server, RSLinx
Classic does not need an activation key.
RSLinx Classic Gateway can run on any computer, but requires an activation key.