Key takeaways
Short answer: A machine builder designs and delivers a piece of equipment. A systems integrator connects that equipment into your control, data and IT stack. Most large projects need both; confusing the roles produces gaps at the handoff. Assign scope clearly between them — usually at the PLC's network boundary — or both will blame the other when integration fails. See also oee for manufacturing.
A machine builder (OEM) designs and constructs the equipment itself — the mechanics, the electrical design, the PLC and HMI program — and proves it works at a factory acceptance test before delivering and installing it. Their world ends roughly at the machine's network port.
A systems integrator connects equipment into your operations stack — MES, SCADA, CMMS, the network and the data flows between systems. Their world begins at the machine's network port and extends across the plant's information architecture.
A plant buys a new packaging line from a machine builder and expects OEE data to "just appear" in its dashboard. It does not — the machine builder delivered a working line with a PLC, but nobody was scoped to expose its tags, route them to the OEE system and map them. The plant assumed the builder would integrate; the builder assumed the plant had an integrator. The gap sat exactly at the PLC network port that neither owned. A systems integrator, scoped from the start, would have bridged it — and a joint factory acceptance test would have caught the gap before install.
The boundary is usually the PLC's network port: the machine builder owns up to it, the integrator owns from it. Without an explicit, written interface specification at that boundary, each blames the other when data does not flow — the single most common cause of stalled integration projects.
Standalone equipment with no IT integration may need only a machine builder. Any modern plant — OEE monitoring, predictive maintenance, quality data flowing to MES — needs both, working in partnership with clearly divided scope.
1. Hiring only a machine builder for a connected plant. Integration silently becomes plant IT's problem.
2. Hiring only an integrator. Without builder partnership, integration fights the machine.
3. Unclear scope at the handoff. Finger-pointing at the PLC boundary.
4. No joint factory acceptance test for integration. Gaps surface only after install.
OEE data requires both roles: the machine builder exposes the data, the integrator routes it. Plants with strong OEE programs have both partnerships and a clear interface spec — which is why their machine data flows cleanly into the loss tree.
Fabrico connects via standard protocols (OPC UA, Modbus, MQTT) that both machine builders and integrators support, so the data handoff is a known, documented interface rather than a guess. Book a demo to see clean machine-to-OEE integration.
Some larger firms do, but scope clarity at the handoff still matters.
The machine builder typically; the integrator may add tags for data exposure.
The systems integrator.
A joint factory acceptance test, a written interface specification, and a shared issues list.
For any connected plant — OEE, predictive maintenance, MES data — yes.
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