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National Instruments · CompactRIO

NI 9144

The NI 9144 is an eight-slot EtherCAT slave chassis for deterministic, distributed C Series I/O. It supports Scan Mode operation and onboard Spartan-3 FPGA programming for custom timing and inline processing.

ManufacturerNational Instruments

ModelNI 9144

Part Number780438-01 · 780438-02

Product TypeEight-slot EtherCAT slave expansion chassis

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Module slots8 C Series slots

Network100 Mbps EtherCAT

FPGASpartan-3 2M

Power input9–30 VDC

Operating temperature-40 to 70 °C; mounting requirements apply

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Overview

Product overview

Key product information and technical features.

The NI 9144 extends a real-time control system with distributed C Series I/O over EtherCAT. Multiple chassis can be daisy chained from a suitable master controller to expand channel count in time-critical systems.

Scan Mode provides an I/O expansion approach, while the programmable FPGA enables custom timing and local processing. NI documents integration with supported CompactRIO, PXI, and industrial real-time controllers; controller and software-version support must be checked before deployment.

Eight-slot modular architecture for C Series I/O.
EtherCAT slave interface for synchronized, deterministic distributed I/O.
Supports Scan Mode and programmable onboard FPGA operation.
Daisy-chain expansion supports multiple chassis from a master controller.

Verified specifications

Technical data

Verified product specifications.

Slot count	8 slots
FPGA	Spartan-3 2M
Network interface	100BaseTX Ethernet
Communication protocol	EtherCAT
Communication rate	100 Mbps
Maximum cabling distance	100 per segment m
Chassis input voltage	9–30 VDC
Maximum power consumption	20 W
Recommended power supply	24 VDC, 48 W; NEC UL Listed Class 2 supply required
Unloaded dimensions	286.5 × 88.1 × 58.9 mm
Unloaded weight	906 g
Operating temperature	-40 to 70; mounting instructions must be followed to avoid derating °C
Ingress protection	IP40

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National Instruments

Manufacturer

CompactRIO / EtherCAT RIO

Distributed I/O expansion ecosystem

NI 9144

Eight-slot EtherCAT slave chassis

Host system

Supported NI real-time CompactRIO, PXI, or industrial controller configurations with two Ethernet ports.

Verify controller, driver, LabVIEW, and module support before integration. Standard Ethernet switches, hubs, and routers cannot be used for the NI 9144 EtherCAT network.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-9144 Product OverviewOfficial Product Page · ni.com

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NI 9144 SpecificationsSpecifications PDF · download.ni.com

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Benchmarks for the NI 9144 EtherCAT Slave ChassisTechnical resource

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Setting Up EtherCAT on NI Programmable ControllersTechnical resource

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Can Switches, Hubs, or Routers Be Used with the NI 9144?Technical resource

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FAQ

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Product-specific answers based on available technical information.

Is the NI 9144 an EtherCAT master or slave?

It is an EtherCAT slave chassis that adds distributed C Series I/O to a suitable master controller.

Can the NI 9144 connect through a standard Ethernet switch?

No. NI states that normal Ethernet switches, hubs, and routers cannot be used with the NI 9144. A star topology requires a dedicated EtherCAT junction.

Does the NI 9144 require FPGA programming?

The chassis supports Scan Mode as well as onboard FPGA operation. Custom FPGA timing and processing are programmed using the LabVIEW FPGA Module.

What are the NI 9144 part-number variants?

NI lists 780438-01 as the standard chassis and 780438-02 as the conformal-coated variant. The supplied catalog record does not identify which variant this item represents.

Does NI-Industrial Communications for EtherCAT 20.0 support the NI 9144?

No. NI's setup guidance states that NI 9144 support is absent as of version 20.0. Verify an earlier supported software combination for the intended controller.