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Real-time process monitoring

C Process Modeller (CPM) uses GPC technology to model the operating envelope of a process and show it to the user in a real-time ‘you are here’ display of the many variables. Real-time optimisation is achieved by finding sub-spaces of the envelope where secondary objectives, such as ‘energy minimisation’, are also achieved. In alarm systems, CPM generates alerts that have the objective of keeping the process inside the fixed HiLo Alarm Limits found by CVE, allowing an increased level of process safety. All of this is achieved without requiring any mathematics from the developers or users.

Using CPM you can:

tik Improve process safety
tik Reduce alarms
tik Get real-time alerts and advice to keep your process in-line
tik Achieve KPI’s
tik Improve process start-up

But How?

The model that makes all this possible is auto-generated from your existing plant data. There are no expensive mathematical models or rules databases to build or maintain. Its unique operator display is simple to use and is picked up in minutes. Management has access to a display that tells, at a glance, whether the process is under control. No maths is required, unlike methods such as statistical process control. Process knowledge and operations know-how is automatically extracted from your data and encapsulated in the software.

CPM uses only the variables that your process operators are familiar with already, keeping operator acceptability high and training times short.

What's New in CPM 1.4.2?

Dates now logged in local time and UTC

Dates in UTC and Local Time as well as row numbers are now recorded in the Alarm Log and the Limits File. Co-requisite compatibility changes are implemented in CVE 2.7.1. The GPC Animator accepts limits files with dates, but does not display any date information.

Bigger Envelopes

The maximum number of variables in an Operating Envelope has been increased from 100 to 125. The maximum number of data rows in one model-building pass remains at 200,000 but the User Guide explains how to exceed this number using a multi-pass method of building envelopes.

New Development Edition

A development edition that times out after 24 hours of running is sufficient for initial testing of models against near-real-time process historian data, operator training simulators and DCS. All facilities of CPM are available.

Improved OPC Server Monitoring

More informative messages for OPC Server and/or OPC Tunneller issues. CPM supports multiple OPC Server connections.

Write-out of Alert Limits via OPC

HiLo Alert Limits, heartbeat tags and alarm running totals may be written out to via OPC to process historians. Multiple OPC destinations supported.

Improved Sensitivity Scaling

The logarithmic Sensitivity scale has been supplemented with an Expansion factor given as a percentage.

Missing Value Handling

Missing variable values when building envelopes are now correctly accounted for in single envelopes, multi-phase batch and grade change multi-envelopes and nested inner envelopes. Co-requisite changes made in CVE are use of the Save for CPM function. 

Updated User Guide

The CPM User Guide has been updated and new content added. 

What's Next?

To find out more about PPCL's award-winning patented software, book onto one of our introductory webinars: www.ppcl.com/webinars.  For further details, please email This email address is being protected from spambots. You need JavaScript enabled to view it. or call +44(0)1753 893090.


PPCL Webinar: Coming Soon
January 2022

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