Rockwell Automation T8030S Trusted OPC Server Package - Manual (Page 11)

Trusted
TM
OPC T8030S
Issue 23 April 10 PD-T8030S 11
1. Description
1.1. Overview
OPC (OLE for Process Control ) is an industry standard for transferring process and event data
between a server and one or more client applications.
The OPC Server provides an OPC link between a Trusted TM System and one or more OPC clients.
Using Ethernet Interface cards within the server’s host PC, it connects to one or more Trusted TM
Controllers. OPC client applications can connect to the server using Microsoft COM ( or DCOM over a
network ). Each client can browse the server to view the available tag references. Using these
references, the clients can then arrange for groups of tags to be synchronously updated at defined
intervals. Values may also be written asynchronously to the server.
Figure 1 shows how the OPC Server fits between the Trusted TM System hardware and one or more
OPC client applications.
Figure 1 Communication Path for Trusted TM OPC