Introduction

1

Table-Driven System Startup Facility

• All process parameters are stored as a standard Windows compatible flat ASCII .ini file

• Allocate shared memory areas

• Initialize shared memory areas

• Set up process timers

• Assign process priorities

• Load and start all application processes

• Performs automatic process restart

• Displays dynamic list of:

  • active and inactive processes

  • process IDs

  • % utilization of repetition interval

2

Table-Driven System Shutdown Facility

• Uses same table as is used by the System Startup Facility

• Gracefully shuts down all process

• Unilaterally aborts process which do not shut down gracefully

• Deallocate shared memory areas

3

Data Dictionary Builder Process

• Process to build and maintain a data dictionary of process variables

• Uses as input the include (.h) files used to define variables and structures residing in Global Shared Regions.

• Header (include) files are in standard C and C++ language format

• Data dictionary built via an ASCII configuration file

• Produces a flat ASCII, human readable Data Dictionary file which contains:

  • Global Shared Region Names

  • Variable names

  • Variable offsets within structures

  • Supports default and user defined packing specifications (via pack pragma)

  • Supports standard C & C++ variable definitions and the use of user-defined typdefs

• Supports simple and complex data types

  • int

  • float

  • char

  • signed and unsigned modifiers

  • short and long modifiers

  • user defined structures

• Table driven

4

Data Dictionary Access To Process Variables

• Facility provides system wide access to Global Shared Region variables by their variable name (name presented as ASCII string)

• All system processes have access to service via C++ Class

• Returns pointer to Global Shared Memory value

• Read and write access is provided to all variables

• Returns variable type, variable size, and array dimensions

• Also available are user-defined maximum value, minimum value, initial value, and default format specification

• Screens use this module to access process variables by their dictionary name through OPC Server using this class (see following process description)

5

Process Services

• Startup

• Initialize process configuration

  • Priority

  • Timer rates

  • Memory locking

  • Real-Time operation

• Map global commons

• Delay and resumption services

• Shutdown

6

Global Shared Region OPC Server

• OPC (OCX for Process Control) Server Process

• Provides network wide access to variables resident in global common

• Supports all simple data types

• Supports scalar and array variables

• Read and write access is provided to all variables

• Real-Time Web based screens may request and update variable values on a timed basis for screen display

• Access to variables available to any OPC client on TCP/IP network

• Visual Basic compatible objects provided for variable display and data entry

• Visual Basic-compatible objects provided for real-time graphics display

  • Complex bar graph

  • Active shapes

• Automatic communications object provided for screen building

  • Asynchronous, non-blocking operation

7

Trend Data Acquisition System

• Acquisition and storage of real-time process data

• High-speed, real-time data acquired from Process I/O Driver and placed in global shared memory

·         Any Global Shared Memory variables may be trended

o        Process I/O values

o        Calculated values

·         Static list of variables to be trended may be defined in flat ASCII Windows compatible .ini file

·         Support for dynamic addition of variables to be trended

·         Dynamic trend variables automatically deleted when no longer required

·         Trend Data is acquired for user defined period and at user defined rate

·         Trend data is available for display on operator/engineering screens

·         Trend data stored in system memory. 

·         Extended storage of data to disk files.

8

Real-time Trend Data Display System

·         Provides display portion of the Real-Time Trend System.

·         Display of process variables in Real-Time

·         High-speed data trending display screens

·         Data displayed in tabular and graphical format

·         Real-time display of variables on web based screens

o        Display 1 to 30 (or more) variables simultaneously

o        Data rates as fast as 20ms

o        Screen update rates at 1 second

·         User control over display formats

·         Locally implemented (client side) Pan and Zoom features

·         Data Export features implemented web screen available on any client terminal

9

Web Screen HMI system

·         Provides real-time display and modification of process data

·         Based on standard Web based browser technology

·         Standard Windows 2000 client workstation configuration

·         IBM PC compatible workstation

o        Windows 2000 4.0

o        Microsoft Internet Explorer 5

o        No special client side environment or software

·         Facilities are provided for designing, building, and maintaining screens

·         Standard Windows 2000 IIS / Peer Web server utilized for publishing HMI screens as standard internet web pages

·         Screens may be published to any network attached workstation using a standard web browser

·         Real-Time screens built with Visual Basic

·         Automated process to build web screen and associated CAB files from VB Screen OCX

·         Custom controls for building animated displays using Microsoft Visual Basic 6.0, including:

o        Data Entry / Data Display Text Box

o        Trend plot objects

o        Scalar and vector bar graph objects

o        Color fill and Active Shape objects

o        Link buttons to other pages

o        Server data connection management objects

o        Data dictionary-based access to variables in global shared memory

·         Access to screen functionality may be password protected

10

Standard Screens

·Probe

o        Display and modify variables in global shared memory areas

o  User-defined DataSets of commonly referenced variables

o        Page forward/Page back through groups of variables

o        support for multiple variable types

§         floats

§         integers

§         character strings

§         Boolean values

o        Multiple display formats

§         Standard / default associated with data type

§         Hex

§         Binary

·ProbeA

§         Same functionality as Probe on Vector/Array objects

·ProbeV

o        Same functionality as ProbeA with an additional graphic display of the Vector/Array object values

·TrendX

o        View multiple simultaneous trends in real-time

o        Displayed as 1 to 5 independent strip-chart graphs

o        Supports 1 to 5 independent Y axis

o        User defined Trendsets of commonly referenced variables

o        Page forward/Page back through groups of variables

11

System Procedures

Procedures are provided to accomplish the following functions:

·         Install and configure Tsentry system components

·         Set up screen development system, including VB controls

·         Screen development and control placement procedures

·         Build user application libraries

·         Build (make) individual application programs

·         Build (batch make) all application programs

·         Clone basic process source and build environment to create another application process

·         Build / rebuild data dictionary

·         System backup & restore  procedures