Documentation follows the current External Control Test workflow. Start with the guide that matches your controller-test step.
Plant Workflow

Build the plant in the same order you test it.

Select devices, define the shared System design, and establish controller exchange first. Then compile and activate the integrated plant, run the Plant Test stored in the same project, review its evidence, and analyze completed behavior before proposing draft tuning.

Core Application Workflow

Define the system and prove its behavior in one project.

System Integration defines and activates the HVAC system; Plant Test verifies that exact system with a scenario stored in the same portable project.

Plant System Integration

Use one .modbussim project to compose compressor, circuit, economizer, water-confirmation, I/O, protocol, alarm, and monitoring logic without duplicating fixed logic views.

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Plant Test Plans

Use the Plant Test scenario stored in the active .modbussim project, run deterministic Step and Ramp phases, evaluate measurable criteria, preserve the complete evidence bundle, and analyze completed behavior before proposing draft tuning.

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Supporting Workflow Guides

Prepare, observe, tune, and protect the approved project.

Use Quick Start for the first PLC endpoint, Engineering Workflow for the release path, Control Quality Monitor for observation, Behavior Model for tuning, and Release and Migration Checks for baseline protection.

Quick Start

Install ModbusSim, select the devices, bind a physical, virtual, or loopback adapter, and confirm the first controller-facing Modbus endpoint.

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Engineering Workflow

Use one portable .modbussim file as the normal engineering package. It carries the shared System design, equipment, communication, behavior assets, and current Plant Test scenario; standalone .modbustest files remain available for import and evidence snapshots.

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Control Quality Monitor

Use Control Quality Monitor for live trends, timing, and event investigation. The Plant Test runner remains responsible for timed phases, measurable criteria, and the acceptance outcome.

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Behavior Model Guide

Behavior editing is a supporting engineering task, not the first plant-workflow page.

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Release and Migration Checks

Repeat integration, simulation, and acceptance testing after code, topology, migration, behavior, or communication changes; each approved .modbussim project keeps its own Plant Test scenario.

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Next Action

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