Specifications

Advanced Point Configuration
PlantScape Server and Client Configuration Guide 179
Advanced Point Configuration
The configuration tasks described in this topic relate to functions that are not
essential to implement for the successful running of your system, but rather allow
you to take advantage of some advanced features of PlantScape point
configuration.
The following procedures show how to:
• Define points to represent an address in the database, rather than an
address in a controller
• Use auxiliary parameters
• Build points off-scan
• Perform server-wide point configuration tasks
• Use point internal reference numbers
• Checking the scanning performance of your system
Database Addresses
You can configure points to access addresses in the database, rather than
addresses in controllers. Such points are sometimes known as “database points”,
but they have the characteristics of the type of fixed point they are accessing.
The database addresses can be either point parameters or user files. For details
about user files, see the Application Development Guide.
To configure a “database point”, you specify that the address type for its PV
Source Address is “Point”.
The syntax for accessing a database address for a point parameter is:
P:
Point_id param
Where:
Point_id and param are the point ID and parameter of the point to be
referenced.
Example To scan the SP parameter of the point with a point ID of FLOW1, into the
PV parameter of another point, the following source address would be used:
P: FLOW1 SP
plscpcg.book Page 179 Monday, May 28, 2001 10:11 AM