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DNMControls &
Automation

Case studies

What the job actually involved

Problem, constraint, approach, result — with the number that mattered. Client names are withheld or anonymised where they have not been cleared for publication.

Photograph pending · 4:3Site installation — panel being positioned or field cabling being landed in a plant roompublic/photography/site-installation.jpg
Semiconductor2025Tamil Nadu, India

PLC-5 to ControlLogix migration on a fab's process cooling water plant

A semiconductor fab in Sriperumbudur

An obsolete PLC-5 running PCW for a tool bank, replaced over a single 14-hour window with a tested route back to the original system.

14 hrssingle shutdown window, no overrun

  • Allen Bradley PLC-5
  • ControlLogix
  • FactoryTalk View SE
Photograph pending · 4:3A SCADA mimic on a plant monitor — real screen, photographed in place rather than a clean screenshotpublic/photography/scada-screen.jpg
Water & wastewater2025Tamil Nadu, India

Citect SCADA audit and redundancy rebuild on an effluent treatment plant

A food manufacturing site in Coimbatore

A redundant SCADA pair that had never actually failed over, found during a first AMC visit and rebuilt without taking the plant out of service.

0 hrsplant downtime during the rebuild

  • Citect SCADA
  • Schneider Modicon M340
Photograph pending · 4:3Operator HMI close-up with a hand on the panel, alarms or trends on screenpublic/photography/hmi-closeup.jpg
Nutrition2024Tamil Nadu, India

WinCC Flexible to TIA Portal migration across a packaging line

A nutrition products manufacturer in Hosur

Eleven operator panels on end-of-life WinCC Flexible, rebuilt on a common template so the twelfth machine cost a fraction of the first.

1,400 → 380configured alarms after rationalisation

  • WinCC Flexible
  • WinCC Advanced
  • Siemens S7-300
  • S7-1500
Photograph pending · 4:3Plant utilities exterior — cooling towers, chillers or a scrubber stack at a site DNM works onpublic/photography/plant-exterior.jpg
Pharmaceutical2024Tamil Nadu, India

Chiller plant integration and energy monitoring across a mixed-vendor facility

A pharmaceutical facility in Chennai

Four chillers from three vendors, plus cooling towers and AHUs, brought onto one head-end with metering placed to answer two specific questions.

9 meterstargeted, against a proposed 40

  • Siemens S7-1500
  • WinCC
  • BACnet/IP
  • Modbus TCP

Next step

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We write up completed work with the client's agreement, anonymised where that is what it takes. It is a fair exchange for a job done properly.

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