CCN tables and proxy points

CCN driver points are organized into tables under table groups and displayed in tabular form. Adding a device automatically also adds table groups and proxy points to the database. The collection of CCN proxy point table objects models the tables of a CCN controller.

Proxy points

The collection of CCN proxy point objects model the real and internal I/O as well as selected internal modules of a CCN controller.

Proxy points, their behaviour and where they are valid

Type of point Behaviour Where it is valid
Ccn Input Proxy Models a single input point defined by field index and field name in the table.

An Input Point is one that is not forceable or writeable.

Valid under CcnPicTable types 11H and 12H (applies to non-forcible points)
Ccn Output Proxy Models a single forceable output point defined by field index and field name in the table. An Output Point is one that is forceable. You can select the Set Value command. Valid under CcnPicTable types 11 H and 12H (applies to forcible points)

or

Models a single non-forceable output point defined by field index and field name in the table. This point cannot be forced but can be set.

Valid under:
  • CcnPicTable types 10H and 13H, or 17H
  • CcnDataTable types that are under CcnPocTable types 14H, 16H, or 18H
Ccn Fid Output Proxy Models a single output point defined by field index and field name in the table. An output points is forceable. You can select the Force and Auto commands. Valid under CcnFidTable types 501H

Points and tables

Points and the tables they belong to

Point(s) Tables
CcnTable proxy point CcnPicTable, CcnPocTable, CcnDataTable, CcnDataTablewithTimeSchedule, CcnFidTable, CcnFidTablewithTimeSchedule, and CcnAHTable
CcnPicTable or CcnPocTable or CcnAHTable proxy point can only be added to a CcnDevice container generally under a CcnTableGroup
CcnDataTable or CcnDataTablewithTimeSchedule proxy point can only be added to a CcnPocTable container generally under a CcnTableGroup
CcnFidTable or CcnFidTablewithTimeSchedule proxy point can only be added to a CcnDevice container generally under a CcnTableGroup

Tables and points

Tables and the points they model

CCN table Points modeled by the table
CcnPicTable Models a single Pic table defined by table type and table instance.
CcnPocTable Models a single Poc table defined by table type and table instance.
CcnDataTable Models a single Data table defined by table type and table instance.
CcnDataTableWithTimeSchedule Models a single Data table with Time Schedule defined by table type and table instance.
CcnAHTable Models a single Alarm History table defined by table type and table instance.
CcnFidTable For IO Points table type 501H, one table entry (instance 1) models all IO point tables (up to 64 points - 1 instance of table type 501H per point)

For all other Fid table types supported (Time Schedules, Setpoints, Holidays) , Fid Tables model device tables 1 for 1 by table type and table instance

CcnFidTableWithTimeSchedule Models a single Fid table with Time Schedule defined by table type and table instance.