On-line HART System



Base Station can be used as the cornerstone of a powerful on-line instrument management system for your enterprise.  Interface components for such a system include a wide variety of HART multiplexers, PLCís, control system, or intrinsic safety barrier equipment that supports HART communications.  In addition, you will need the optional Cornerstone Communication Library (ComLib) that interfaces the make and model of interface hardware you have chosen.  You can use one or more types of HART interface hardware in one Cornerstone system.

The standard Base Station includes a Communication Manager window that provides an interface to HART multiplexer equipment through corresponding ComLib software modules.  This window is used to maintain the configuration and connection to instruments attached to your HART communications hardware.  The Communication Manager window fulfills several major functions.

bulletIn conjunction with the appropriate Cornerstone ComLib software, it supports the setup and maintenance of HART compatible multiplexer communications equipment from specific vendors.
bulletIt maintains the On-line Event Log, which records status events for multiple instrument networks of different types for a unified presentation.  Log entries include Time and Date, network or node name, event type, and event description.
bulletNew event messages are highlighted in the On-line Event log, and optionally audibly annunciated.

The On-line Event Log is a principal feature of both the Communication Manager window and the optional Status Monitor window.  It presents events related to the operation of an on-line instrument management system.  The events inform you of network, node, and instrument status changes sensed by the ComLibs, as well as errors that may be detected in the operation of the ComLibs.

This log operates much like a typical alarm display on a control system, including new message annunciation and operator acknowledge functions.  All or portions of the log can be printed according to criteria you specify.

Network Functions

bulletLearn - Automatically locates all instrument networks, multiplexer nodes, and connected instruments.  You can choose to do this for the entire system or for selected nodes.  Located instruments are added to the Active Instrument List to show all instruments connected to your Base Station system.  Learn is used initially to build the software list of instruments connected to a new Base Station on-line instrument system.  Subsequently, it is used to detect and add new instruments or entire new instrument nodes when you expand your system.
bulletRestart - Sends reset commands to each multiplexer node and accesses each instrument to verify connectivity.  You can choose to do this for the entire network or only for selected nodes.
bulletScanning - Allows you to enable or disable scanning of all nodes or selected nodes.  Scanning is the periodic accessing of connected multiplexer nodes to gather current status of the nodes and connected instruments, as reported by the nodes.

Node Functions

This window provides functions for a selected multiplexer node.  The specific features provided here differ depending on which type of multiplexer equipment is employed.  These features are provided in this window by the Cornerstone ComLib interface software used to support the multiplexer model you are using.

bulletIdentification - Review or change node configuration information.
bulletOperation - View and interact with node operational parameters.
bulletScanning - Change the scan status of a single node.
bulletSelf Test - Conduct a test of the node.

Instrument Functions

Functions are provided to assist you in managing the on-line connection to your instrument population.  These include:

bulletActive List - Shows all active instruments connected via multiplexer hardware, including address information and scan status.  Provides Add and Remove Instrument functions so that you can inform the software of changes in your connected instruments.  Other supporting functions include View an instrumentís configuration, Filter the displayed list, and Print the list.
bulletFix UIDís - Some multiplexers can detect non-unique IDís in connected instruments.  This function helps you fix these so that all instruments have the required unique identifiers.
bulletFix Tags - Some multiplexers can detect non-unique Tags in connected instruments.  This function helps you fix these so that all instruments have the required unique Tag.

Other Functions


Print - all or part of the On-line Event Log.


Setup Annunciation - Enable or Disable annunciation of new on-line events and change the reminder interval.


Setup Communications Libraries - Setup ComLib operational parameters.


Setup On-line Event Log - Choose the maximum number of entries.


Acknowledge - new event messages and turn off annunciation for them.

Optional Instrument Status Monitor

You can purchase an optional Instrument Status Monitor (ISM) software module to enhance the functions of an on-line instrument monitoring system using HART Multiplexers.  ISM replaces the Communication Manager window with the Status Monitor window that includes all the Communications Manager functions described here and adds enhanced ISM features to:

bulletAutomatically build your instrument database by connecting to all new instruments
bulletAutomatically reconcile as-found device configurations with current database records
bulletScan and acquire process variables and detect status changes in all attached instruments
bulletDisplay status change messages in On-line Event Log
bulletUpdate displays with instrument scan status
bulletTrack field changes in device configuration and automatically create history records to document the changes
bulletLet you customize the On-line Event Log display with event filters

Additional details about the Instrument Status Monitor option are described on a separate product page.


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This site was last updated on 17 May 2005.