OptiFlex™ I/O Expander– FIO812u

BMS & Control Automated Logic BUILDING CONTROLLERS
OptiFlex™ I/O Expander– FIO812u
FACILITY CONTROL

OptiFlex™ I/O Expander– FIO812u

High‑capacity I/O expansion for OptiFlex™ BACnet building controllers
The OptiFlex™ I/O Expander FIO812u provides scalable input and output expansion for OptiFlex™ BACnet Building Controllers, enabling larger and more complex control applications while maintaining seamless integration with the WebCTRL® building automation system.

OptiFlex™ I/O Expander– FIO812u

OptiFlex I/O expanders deliver input and output capacity to the powerful OptiFlex BACnet Building Controllers. Up to nine OptiFlex I/O expanders can be added to an OptiFlex BACnet Building controller.

OptiFlex I/O expanders are designed for flexible panel configurations. They are DIN rail or screwtab mountable and can be mixed and matched to meet the I/O requirements of the equipment being controlled. The expanders can be mounted directly to the OFBBC controller or remotely mounted up to 500’ away.

OptiFlex™ I/O Expander– FIO812u

I/O Expansion Capability

Expands the input and output capacity of compatible OptiFlex™ BACnet Building Controllers, supporting increased system control requirements.

Local Service & Updates

Includes a USB port for local device updates, simplifying maintenance and servicing.

Flexible Mounting Options

Supports DIN rail or screw mounting, allowing installation in control panels, mechanical rooms, or equipment enclosures.

Seamless WebCTRL® Integration

Integrates directly with the WebCTRL® building automation system, ensuring consistent system operation and centralized management.

Controller Compatibility

The FIO812u is compatible with the following OptiFlex™ BACnet Building Controller models:

OF1628
OFBBC
OF1628‑NR
OFBBC‑NR
OF028‑NR

Connectivity & Expansion

The expander connects directly to the host OptiFlex™ controller to extend system I/O capacity without the need for additional standalone controllers.

Service Interface

A USB service port is provided for local firmware updates and device servicing.

Mounting & Installation

Supports DIN rail or screw mounting, enabling flexible installation in a variety of approved locations.

Document Name Description Document Type Language Action
Spec Sheet OptiFlex™ I/O Expander (FIO812u) Spec Sheet PDF English Download
Modbus Protocol OptiFlex™ I/O Expander (FIO812u) Modus Protocol PDF English Download
What is the purpose of the FIO812u?

The FIO812u is used to expand the I/O capacity of compatible OptiFlex™ BACnet Building Controllers for larger control applications.

Does the FIO812u operate independently?

No. The FIO812u functions as an I/O expansion module and operates in conjunction with a compatible OptiFlex™ BACnet Building Controller.

How are firmware updates performed?

Firmware updates are performed locally using the USB service port.

Is the FIO812u suitable for retrofit projects?

Yes. Its scalable design and flexible mounting options make it suitable for both new installations and retrofit expansions.

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