04 / ROOT CAUSE / DIAGNOSTICS

When the components work.
But the system does not.

Many failures do not originate inside one device. They appear between PCS and EMS, PLC and process equipment, protection and control, or between documentation and actual behaviour. We analyse the system as a whole and look for an evidence-based root cause.

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ROOT CAUSEMODBUS / OPC UAFAIL-SAFE
GC / 04 / ROOT CAUSE / DIAGNOSTICS
01 / BRIEF02 / DELIVERY03 / OUTPUT
Service principle—not measured data or a manufacturing drawing.

SERVICE SCOPE

Observe → Measure → Isolate → Verify → Solve.

Diagnostics are based on logs, measurements, timing and reproducible tests—not on assumptions about which supplier is right.

01

Observe and measure

Logs, alarms, registers, timing, setpoints and the actual response of equipment.

02

Isolate the interface

Remote/local modes, start/stop logic, interlocks, command priorities and communication links.

03

Verify the hypothesis

A controlled test or measurement that confirms or disproves the suspected root cause.

04

Correct and retest

Recommended configuration, logic or interface changes followed by verification of the result.

WHAT TO PREPARE

Inputs for a useful start.

  • Current diagrams and interface documentation
  • Logs, alarms and an incident timeline
  • Register maps / signal lists
  • Description of expected and observed behaviour

WHAT WE DELIVER

An output you can use.

Traceable technical findings, a likely or confirmed root cause, recommended actions and a test scenario to verify the correction.

The diagnostic scope depends on available data and the ability to reproduce the issue safely. Some cases require cooperation from manufacturers or the operator.

PRACTICAL DETAILS

Questions we are
often asked.

Do you work across multiple vendors?

Yes. Interfaces between technologies, suppliers and responsibilities are often where complex faults appear.

Can troubleshooting be done remotely?

Part of the analysis can. If measurements, live intervention or functional testing are required, the on-site scope is agreed in advance.

START WITH THE BRIEF

What should your
project achieve?

Tell us the asset type, project stage and the outcome you need. We will start from there.

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