PARCcalc Server Summary and Overview

This information is specific to the latest release of PARCview:

7.2.x

PARCcalc Server performs calculations set up in the PARCcalc Config application on a cycle configurable per PARCcalc Server instance. Calculations are saved within groups and must be saved to the database to be active on the server. These are server-side calculations, and all work is placed onto the dataPARC application server.

The scripting language is based on Sax with some custom PARCview functions. The data generated is historized into flat files unlike client-side Calc Tags that are processed ad-hoc on the calling machine.

PARCcalc Config can be used to backfill data from specific groups if necessary.

PARCSecurity Permissions

PARCsecurity Console has no permissions for utilizing the PARCcalc Server nor the PARCcalc Config applications. Anyone with access to the dataPARC server can use PARCcalc Config to setup calculations.

Configuration

Most of the configuration is done within PARCcalc Config. This tool gives you the options to modify the following:

• Instance Number – Server Instance the Group used to run the calculation
• Server Cycle Time – Number of seconds to cycle the calculation
• Output Time Format – Format mask for the timestamps written to history
• Output Source Name – Name of the Calc source
• Output File Type
• Path to write files – Location that data files are written to for PortIO to read.
• Path to PARCcalc Config on Server – Location of PARCcalc Config folder

Log Files

PARCmessage is a built-in error monitoring software. It creates an ongoing log of errors generated from PARCview on the specific computer where PARCmessage is running.

PARCcalc Server specific errors will be stored on the server in the PARCcalcServer install path ...\Capstone\PARCCalcServer

PARCcalc Config may contain specific errors on the server in the PARCcalc Config install path ...\Capstone\PARCCalcConfig

Errors can also be stored in the PARCview install directory both on the server and clients ...\Capstone\PARCView\LogFiles

Required Server Applications

PARCcalc Server: The PARCcalc Server performs the calculations set up in PARCcalc Config at the set cycle time. Multiple instances of PARCcalc Server must be set up in FireDaemon to allow for different cycle times or load balancing of the servers.

UA Server: All PARCview vr 7 functionality requires a Universal Access (UA) server.

GDS: All PARCview vr 7 functionality requires a Global Discovery Server (GDS).