Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product model | NI-9853 |
| Manufacturer | National Instruments (NI) |
| Product category | CompactDAQ CAN/LIN Interface Module |
| Communication protocols | CAN 2.0A (11-bit ID), CAN 2.0B (29-bit ID); supports CAN FD (Flexible Data Rate) |
| CAN FD data rates | Up to 8 Mbps (data phase); 1 Mbps (arbitration phase) |
| Standard CAN data rates | Up to 1 Mbps |
| Interface type | 2-port isolated CAN (each port with CAN_H, CAN_L, GND) |
| Isolation voltage | 250 Vrms (channel-to-channel and channel-to-ground) |
| Compatibility | Works with NI CompactDAQ chassis (e.g., cDAQ-9178, cDAQ-9185) |
| Operating temperature range | -40 °C to 70 °C (-40 °F to 158 °F) |
| Storage temperature range | -40 °C to 85 °C (-40 °F to 185 °F) |
| Physical dimensions (W×H×D) | 34.3 mm × 89.9 mm × 125.7 mm (1.35 in × 3.54 in × 4.95 in) |
| Weight | Approximately 85 g (3.0 oz) |
| Power consumption | +5 VDC @ 200 mA (max, from CompactDAQ chassis) |
| Software support | NI-CAN driver, LabVIEW, LabWindows/CVI, .NET, C/C++ |
| Compliance standards | CE, FCC Class A, UL 61010-1, IEC 61010-1, ISO 11898-2 (CAN physical layer) |
NI-9853
Product Introduction
The NI-9853 is a high-performance 2-port isolated CAN/LIN interface module developed by National Instruments (NI), specifically engineered for integrating Controller Area Network (CAN) communication into CompactDAQ-based test and automation systems. As a key member of NI’s CompactDAQ I/O module family, it combines robust CAN FD support with industrial-grade isolation, making it ideal for connecting to CAN-based devices (e.g., automotive ECUs, industrial sensors, and embedded controllers) in harsh industrial and mobile environments.
At the core of the NI-9853 is its dual-port design, which enables simultaneous communication with two independent CAN networks—eliminating the need for multiple single-port modules. When paired with a CompactDAQ chassis (such as the NI cDAQ-9178), the NI-9853 becomes part of a scalable, portable system: engineers can add other CompactDAQ modules (e.g., data acquisition, digital I/O) to the same chassis, creating an all-in-one solution for monitoring CAN traffic while collecting sensor data. This integration simplifies system design and reduces the complexity of managing separate communication and measurement hardware.
Core Advantages and Technical Highlights
Industrial-Grade Isolation: The NI-9853 features 250 Vrms isolation between channels and from channels to ground, protecting both the module and connected devices from voltage transients and ground loops—common issues in industrial environments. For example, in automotive manufacturing plants, where machinery generates electrical noise, the isolation in the NI-9853 prevents interference from corrupting CAN data, ensuring reliable communication with vehicle ECUs during testing.
CAN FD Support for High-Speed Data Transfer: Unlike legacy CAN modules limited to 1 Mbps, the NI-9853 supports CAN FD, which boosts data rates to 8 Mbps in the data phase. This is critical for modern industrial systems that require faster transmission of large datasets—such as ADAS (Advanced Driver Assistance Systems) in vehicles, where ECUs send high-resolution sensor data (e.g., from cameras or LiDAR) over CAN FD. The NI-9853 handles this increased throughput without dropping frames, enabling real-time monitoring of critical systems.
Dual-Port Flexibility: With two independent CAN ports, the NI-9853 allows users to connect to two separate CAN networks simultaneously. For instance, in a factory automation setup, one port of the NI-9853 can communicate with a production line’s motor controllers (CAN 2.0B), while the other port monitors a safety system’s CAN network (CAN 2.0A). This dual-port capability reduces hardware costs and saves space in the CompactDAQ chassis, as a single NI-9853 replaces two single-port modules.
Seamless Software Integration: The NI-9853 works with NI’s NI-CAN driver, which provides intuitive APIs for configuring CAN networks, sending/receiving messages, and filtering data. When used with LabVIEW, the NI-9853 enables visual programming of CAN communication—engineers can build custom dashboards to monitor CAN traffic in real time, set up triggers for specific message IDs, or log data to disk for post-analysis. This software integration accelerates development time, as users don’t need to write low-level CAN driver code.
Typical Application Scenarios
The NI-9853 excels in applications where reliable CAN communication is critical, particularly in automotive, industrial, and mobile systems. In automotive end-of-line (EOL) testing, the NI-9853 is a key component of test stations for vehicle ECUs: technicians install the NI-9853 in a NI cDAQ-9178 chassis, connecting its ports to the ECU’s CAN FD network. The module sends test commands to the ECU (e.g., simulating accelerator inputs) and receives feedback (e.g., engine speed data), verifying that the ECU operates correctly before the vehicle leaves the factory.
In industrial automation, the NI-9853 is used to monitor and control CAN-based machinery—such as conveyor belts, robotic arms, and HVAC systems. For example, in a warehouse, the NI-9853 (paired with a NI cDAQ-9185 wireless chassis) wirelessly connects to a fleet of autonomous guided vehicles (AGVs) via CAN. The module collects vehicle status data (e.g., battery level, position) and sends navigation commands, enabling centralized monitoring and control of the AGV fleet. The NI-9853’s wide operating temperature range (-40 °C to 70 °C) ensures it performs reliably in cold warehouses or hot manufacturing floors.
In aerospace and defense, the NI-9853 supports testing of avionics subsystems that use CAN (e.g., cabin control systems). Engineers connect the NI-9853 to a CompactDAQ chassis in a test bench, using the module to simulate CAN messages from aircraft sensors and validate how the avionics system responds. The module’s isolation and CAN FD support ensure that tests are accurate and reliable, meeting strict aerospace safety standards.
NI-9853
Related Model Recommendations
NI-9852: A 1-port CAN interface module, a compact alternative to the NI-9853 for applications requiring only single-network communication (e.g., small-scale industrial sensors).
NI-9854: A 2-port CAN FD module with extended temperature range (-55 °C to 85 °C), an upgrade to the NI-9853 for extreme environments (e.g., military field testing).
NI cDAQ-9178: An 8-slot CompactDAQ chassis, the primary companion to the NI-9853—provides power and synchronization for the module in portable test systems.
NI-9862: A CAN/LIN interface module with integrated LIN support, a complementary model to the NI-9853 for systems using both CAN and LIN protocols (e.g., automotive body control modules).
NI PXIe-8513: A PXIe CAN FD module, a high-performance alternative to the NI-9853 for PXI-based test systems (e.g., high-throughput automotive ECU testing).
NI-9851: A legacy 1-port CAN module, fully compatible with CompactDAQ chassis—ideal for users transitioning from older CAN systems to the NI-9853.
NI cDAQ-9185: A 4-slot wireless CompactDAQ chassis, pairs with the NI-9853 for remote monitoring applications (e.g., AGV fleets, offshore oil rig sensors).
NI-9855: A 4-port CAN FD module, an expansion of the NI-9853 for large-scale systems requiring communication with four CAN networks (e.g., multi-ECU automotive test benches).
Installation, Commissioning and Maintenance Instructions
Installation preparation: Before installing the NI-9853, ensure the CompactDAQ chassis (e.g., NI cDAQ-9178) is powered off and disconnected from the AC source. Verify that the chassis firmware is up to date (via NI Measurement & Automation Explorer, MAX) to ensure compatibility with the NI-9853. Align the module’s edge connector with the chassis slot, then push firmly until the module clicks into place—do not force the module, as this may damage the connector. Connect CAN devices to the NI-9853’s ports using twisted-pair CAN cables (minimum 24 AWG) and secure connectors with screws to prevent accidental disconnection. Power on the chassis, then install the latest NI-CAN driver from NI’s website to enable communication with the module.
Maintenance suggestions: For long-term reliability of the NI-9853, inspect the CAN cable connections quarterly—tighten loose screws to prevent signal loss. Clean the module’s exterior with a dry, lint-free cloth; avoid using solvents, as they may damage the plastic housing. If the NI-9853 fails to communicate with the CAN network, check for loose cables, verify the CAN termination resistor (120 Ω) is installed at the end of the network, and use MAX to troubleshoot driver or firmware issues. Calibrate the module’s timing circuits annually using NI’s Calibration Executive software to maintain accurate message synchronization. For hardware faults (e.g., no power, port failure), contact NI technical support—do not open the module, as this will void the warranty.
Service and Guarantee Commitment
The NI-9853 comes with a standard 1-year manufacturer’s warranty, covering defects in materials and workmanship. NI guarantees that the NI-9853 will meet all published technical specifications during the warranty period, with free repair or replacement of defective units. Customers can extend coverage to 5 years by purchasing NI’s Extended Service Program (ESP), which includes priority technical support, expedited repair (24–48 hour turnaround for critical issues), and annual calibration services to maintain performance.
NI provides comprehensive support for the NI-9853 through global channels: online resources (application notes, video tutorials, and a community forum), email support, and phone access to NI’s team of CAN/CAN FD experts. For custom integration needs, NI offers professional services—including system design, software development (e.g., LabVIEW CAN dashboards), and on-site training—to help customers optimize their NI-9853-based communication systems. This commitment ensures that users maximize uptime, reduce operational costs, and get the most value from their NI-9853 investment throughout its lifecycle.
