ProSoft Technology PS-QS-1x10-0781 - Manual (Page 7)

FieldServer Configuration Manual Page 7 of 90
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1.3.2 Clients and Servers
A Client Node can request data from and write data to a Server. In Process Control and Building Automation
applications, it is accurate to describe a Client as a device that receives status and alarm data from a Server, and
writes setpoints and control points to the Server.
In a FieldServer application, there is a Client/Server relationship on each network coupled to the FieldServer. It is
therefore typical that the FieldServer acts as a Client and a Server at the same time. Figure I below illustrates this.
SLAVE
Server Side
Client Side
Server Node
Client Node
MASTER
FieldServer
Figure I - Client/Server