Specifications

PlantScape OPC Support
PlantScape Server and Client Configuration Guide 437
Using the PlantScape OPC Server
Preparation
See the PlantScape Installation Guide for details on how to configure the
PlantScape server computer and an OPC Client computer for OPC connection,
and for a description of the PlantScape OPC Server Connect package that must be
installed on OPC Client computers.
Connecting to the PlantScape OPC Server
An OPC Client requires two pieces of information to connect to the PlantScape
OPC Server over the network.
1 TCP/IP hostname of the PlantScape Server computer
2 PlantScape OPC Server Prog Id.
The PlantScape OPC Server Prog Id is HWHsc.OPCServer.
Refer to the user documentation that came with your OPC Client software for
details on using this information with your client.
Notes
• When you run an OPC client on the PlantScape Server computer you should
use localhost as the TCP/IP hostname.
• The TCP/IP hostname of the server should be put in the hosts file of the
computer that the OPC Client is running on. On Windows the TCP/IP hosts
file is winnt\system32\drivers\etc\hosts
Accessing OPC Server Data
Data on the PlantScape OPC Server is accessed by building OPC Items with an
OPC Client. An OPC Item represents a connection to an item of data on an OPC
server. For example, an OPC item might be built on a client to reference a
PlantScape analog point’s PV parameter. An OPC Client can then access the value
of the PV.
To build an item you are required to provide some or all or the following
information.
•item name
• item type
• update rate and deadband
Refer to your OPC Client user documentation for details on item building.
plscpcg.book Page 437 Monday, May 28, 2001 10:11 AM