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OT connectivity
Network paths from plant rooms, substations and process areas to the supervisory layer, designed with segmentation between operational and corporate networks and delivered with ESC's ICT package.
SCADA / OT · One of eight disciplines
Bringing plant and OT data into the building picture
OT connectivity, protocol gateways and integration with the Honeywell BMS and command rooms — so the facility team sees generators, UPS, pumps and process equipment alongside the building systems ESC already delivers.
Operational technology, integrated
SCADA and OT connectivity as part of the integration platform
Most facilities have equipment that lives outside the building management system: generators and switchgear with their own controllers, UPS and ATS with vendor panels, pumps, treatment plant or process equipment on a SCADA network. ESC's SCADA / OT discipline connects that equipment to the same supervisory layer and command rooms as the fire, security and BMS systems, using protocol gateways and segmented networks rather than another standalone screen.
The scope is deliberately practical: identify the OT data the facility needs, agree the interface with the equipment vendor, provide the gateway and the network path, and present the points in the Honeywell BMS on the Niagara Framework or the command-room platform. ESC delivers this as one of its eight core engineering disciplines, alongside fire and life safety, BMS, security, physical security, data centers, ICT and IPTV, on projects where a single integrator is asked to own the whole picture.
Systems covered
What the SCADA / OT discipline delivers
Connectivity and integration for equipment the building team needs to see, without replacing the vendor's own controls.
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Protocol gateways
Modbus, BACnet and OPC gateways that translate vendor controllers — generators, switchgear, UPS, ATS, chillers, pumps — into points the BMS and command room can monitor and trend.
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Integration with Honeywell BMS
OT points presented on the Honeywell BMS on the Niagara Framework with alarms, trend logs and operator graphics, so mechanical, electrical and process status share one platform.
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Command-room presentation
OT alarms and status alongside fire, security and building events in the command centre, with the same priorities, escalation and audit history as the rest of the facility.
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Interfaces to power and life safety
Generator, UPS and ATS status into the BMS, and the fire cause-and-effect interfaces to plant that must shut down or change state on an alarm, tested end to end with the fire system.
Consultant-ready engineering
What consultants receive from ESC
OT integration is documented point by point and interface by interface, so responsibility is clear on both sides of every gateway.
Interface register and points listEvery OT point with source equipment, protocol, gateway and destination system
Network and gateway architecture drawingOT network segments, gateway placement and the path to the BMS and command room
Material submittals with compliance sheets and datasheetsGateway, network and BMS component data with clause-by-clause compliance
Method statements, ITPs and FAT/SAT recordsInstallation methods, inspection points and witnessed point-to-point and interface tests
As-built drawings, O&M manuals and trainingHandover documentation and operator training for the facility and maintenance teams
Delivery flow
From interface register to integrated command room
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Design
Interface register, protocol selection, gateway and network architecture and points mapping to the consultant specification.
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Supply
Gateways, network equipment and BMS components through ESC's authorized channels.
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Install
Gateways, network paths and BMS integration installed with method statements and ITPs, coordinated with the equipment vendors.
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Testing & commissioning
Point-to-point verification with each vendor, alarm and trend checks and witnessed FAT/SAT.
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Handover
As-built drawings, interface register, configuration backups, O&M manuals and training.
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Support
Maintenance and technical support in the Kingdom for the gateways and integration layer.
General references
Where OT-adjacent scope appears in ESC's register
ESC's register records UPS, ATS, BMS and network packages in government and healthcare facilities. Scope shown is ESC's systems package; sensitive references are described in general terms only.
Questions consultants ask
SCADA / OT — frequently asked
Does ESC replace the vendor's SCADA or controllers?
No. ESC connects the vendor's equipment to the supervisory layer through gateways and agreed interfaces. The equipment keeps its own controls; the BMS and command room gain visibility and, where specified, supervisory commands.
Which protocols are used for OT integration?
Modbus and BACnet for most plant and electrical equipment, and OPC where the source system provides it. The protocol for each interface is recorded in the interface register agreed during design.
How are OT and corporate networks kept apart?
The OT network is designed as its own segment with controlled paths to the BMS and command room, delivered with ESC's ICT package. The segmentation is documented in the network architecture drawing.