In most cases, it is actually sufficient to look at the ECU’s inputs and outputs to functionally test a component (Figure 1). However, this becomes difficult when state machines are used in the ECU. Their current states can only be derived indirectly by their effects at the ECU’s outputs. In the case of sensors whose values are not transmitted over the network system, it is also very difficult for the test engineer to localize errors to the software interface. From outside the ECU, it is not clear exactly where the sensor value was incorrectly processed.

Different methods that offer access to internal ECU data are used, depending on the phase of ECU development. In early phases, for example, internal ECU values are often output in so-called “reserved development messages” (Figure 1). For the functional developer at a supplier, this is an effective and quick method that precisely targets a specific objective. However, these supplemental messages must be removed for later development phases, especially for system integration and series production. They induce additional bus load, and in the worst case they might even collide with messages of other system components. Another way to access internal values is through diagnostics (Figure 1). Some information is available directly via diagnostics, e.g. diagnostics offers access to fault memory. Special diagnostic services are also provided to read the required values from memory. The advantage here is that a standardized access method is used. The only precondition is full integration of the diagnostic driver; this is generally provided in today’s ECUs. The disadvantage of this method is that a lot of unnecessary diagnostic protocol information is transmitted along with the actual measured values, and this adds load to the network system interface. A data flow analysis of many values is not possible, especially since the measured values do not contain time stamp information.

XCP For Test Access

If network interface load needs to be kept low, an alternative is to use a calibration protocol. Originally, such protocols were developed for the ECU calibrator. They let calibrators modify parameters or characteristic maps in the ECU to optimize their algorithms. With the XCP protocol standardized by ASAM, the user can read individual values directly from the ECU as needed. The protocol can also periodically supply a defined set of measured values from the ECU via so-called Data Acquisition (DAQ) lists. The XCP protocol was defined for efficient provision of data over the network medium. As an example, after configuration the DAQ lists can be transmitted in response to a single identifier from the test system. In addition, measurement times of the DAQ lists can be synchronized to internal ECU processes. Automated test systems place similar requirements on the system. Use of the XCP protocol makes it possible to integrate internal values in test sequences without excessive loading of the ECU or the network system used. Another reason that a widely used standard like XCP is ideal is that it is very easy to configure in the tool chain. All necessary information is already in the A2L file such as internal program memory locations with their names and communication parameters. Depending on the development environment, the A2L file is either automatically generated, or it may need to be generated in a separate step from the linker-map information. In the test tool, the user only has to configure this file once for each ECU used in the test. In a second step, the user selects the symbols needed for the test sequences from the A2L file.

CANoe Option .AMD/XCP

Option .AMD/XCP supplements the CANoe test tool from Vector with the convenient option of reading and writing internal ECU values. Besides supporting the XCP standard, it also supports the previous protocol CCP. Once the A2L file has been configured and the necessary values selected, CANoe automatically acquires them and maps them as system variables. The user can then use these variables in any of the testing tasks. Besides offering access to ECU inputs and outputs, they also provide an in-depth look into the ECU’s memory (Figure 2).

In simple analysis tasks, users can display the data in the Trace or Graphic Window and use panels to evaluate the results. For more complex test sequences, CANoe’s Test Feature Set offers extensive options for creating test cases and automatically evaluating them. For example, this enables checking of the Network Management state machine for correct functionality. The necessary stimulation is performed in the CANoe rest-of-bus simulation, and the ECU’s reaction is not just measurable on the network; it is directly measurable in the ECU over XCP. The effort required to execute test cases is also significantly reduced, e.g. for test cases that require sensors. The test system writes the sensor values directly to memory cells in the ECU over XCP. This eliminates the need to connect and control original sensors at the ECU inputs – a demanding task. The ECU is notified that the sensor and associated hardware driver have measured the values correctly. The same approach can be used in the other direction. Here it is assumed that the output stage and actuator have been tested and accepted. In this case, the test system measures the value that the application prescribes to the driver stage over XCP.

Access With Large Quantities Of Data

If large quantities of data need to be exchanged between the test system and the ECU in a test case, or if especially quick processes need to be monitored, an XCP connection over a CAN network is no longer effective. In such cases, direct access to the ECU’s debug interfaces is recommended. This could be implemented via a NEXUS or JTAG interface, for example. These protocols directly access the ECU memory − partly without load on the microcontroller. Taking this approach, the user can quickly read out very large quantities of data from the system without loading the network and the ECU.

Vector VX hardware, for example, offers direct access to an ECU’s NEXUS or JTAG interface (Figure 2). Since this hardware communicates with the test system via XCP-on-Ethernet, integration in CANoe is as easy as integration for XCP access over CAN. Combining VX hardware with the CANoe test system further improves test system performance, without any negative effects on the communication medium. (MT)

NB: Oliver Falkner is group leader at Vector in product management of the Networks and Distributed Systems product line. Views expressed are personal.

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Hindustan Zinc Limited, India's sole and the world's biggest integrated zinc producer, said today that its Board of Directors has authorised the first phase of investments to double production capacity.

This development is in line with the robust rise in the demand for steel both domestically and internationally. Over the next five years, the company intends to increase its capacity for producing metal and silver, increasing its overall production capacity to over 2,000 KTPA and 1500 tonnes, respectively. In addition to expanding related mines and mills throughout its operations, the Board has authorised the proposal to establish a new 250 KTPA integrated smelter at Debari in the Udaipur area of Rajasthan. The company’s current metal production capacity is 1.1 million tonnes. At a total cost of over INR 120 billion, the project is expected to be finished in 36 months.

This is an important development since it coincides with the ongoing global zinc market shortage. Silver output has increased more than 20 times, while zinc production has increased four times since the government sold up its share in 2002 and the Vedanta Group bought it. Holding the second-highest zinc reserves and resources in the world with more than 25 years of mine life, the firm is one of the lowest cost zinc producers in the world.

Arun Misra, CEO, Hindustan Zinc Limited, said, “We are excited to announce this 2x growth project towards doubling our capacity across zinc, lead and silver, which is strategically aligned with the country’s expanding economic landscape, increasing demand opportunities and keeping country self-reliant for Zinc. By closely matching the pace of national growth, we are confident that this will create significant value for our stakeholders and drive long-term success.”

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India’s automotive industry could face fresh supply chain disruptions by mid-July 2025 due to declining inventories of rare earth magnets, following tightened export restrictions and shipment delays from China, according to rating agency ICRA.

Jitin Makkar, Senior Vice President and Group Head – Corporate Ratings at ICRA, cautioned that the situation echoes the semiconductor shortage of 2021–22, which led to the loss of nearly 100,000 passenger vehicles. “Rare earth magnet inventories are projected to last only until mid-July 2025 for several passenger vehicle and two-wheeler applications,” he said.

Neodymium-iron-boron (NdFeB) magnets, critical for high-performance uses like EV traction motors and power steering systems, are heavily imported – around 85 percent of India’s USD 200 million imports in FY2025 came from China. These magnets make up nearly 30 percent of an electric two-wheeler motor’s cost, with motors priced between INR 8,000 and INR 15,000 depending on specifications.

To counter the supply challenge, Indian OEMs and auto component manufacturers are exploring several alternatives: importing fully assembled motors from China, sending rotors to China for magnet assembly, using substitute materials with similar properties, or switching to rare earth-free motors using electromagnets. However, each option faces significant logistical, regulatory, and engineering hurdles.

While the immediate impact could disrupt production planning, ICRA believes the crisis may also drive innovation and diversification in both materials and supply chains for the Indian auto sector.

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Hyundai Mobis, a part of Hyundai Group specialising in manufacturing of auto components, modules & systems, has developed a new rear safety control technology that can reduce rear-end collisions.

The company states its new active control technology uses sensors to detect approaching vehicles from behind and manoeuvre the vehicle out of danger, is expected to hit the market soon. It integrates sensors such as rear-side radars and front cameras with driving control technology.

The solution works when the driver engages the Smart Cruise Control (SCC) function on the highway. When the sensors detect any other vehicle at a proximity of 10 metres or less, it first emits an audio alarm or a visual warning on the cluster. When the situation keeps persisting after a certain amount of time, the vehicle automatically accelerates to maintain a safe distance. In addition, the rear side radars also detect the movement of the vehicle behind, while the front camera recognises the lane and vehicle ahead on the driving path to assist in safe acceleration.

Hyundai Mobis acknowledges that while some global OEMs have already integrated such technology, the functions are not yet advanced enough for the vehicle to control itself autonomously. On the other hand, its technology is able to independently adjust the distance between the front and rear vehicles and avoid dangerous situations.
The Korean company plans to further expand the scope of autonomous control for defensive driving against rear vehicles. Currently, the company is developing a lane-changing function to escape dangerous situations, in addition to an acceleration control function that allows the vehicle to speed up on its own.

Jung Soo-kyung, Executive Vice-President and Head of Automotive Electronics Business Units, Hyundai Mobis, said, “We will actively protect the safety of mobility users by providing solutions that can intelligently handle not only front-end safety, but also dangerous situations caused by rear vehicles while driving.”

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HARMAN, a leading automotive technology company and subsidiary of Samsung Electronics, has unveiled an advanced in-vehicle display that elevates the driving experience with consumer-tech-level visuals. This cutting-edge display, set to debut in the all-new Tata Harrier.ev, represents the first automotive integration of Samsung’s proprietary Neo QLED technology, exclusively licensed and optimised by HARMAN for vehicle applications.

The new 14.53-inch floating Neo QLED display delivers stunning home-theatre-quality visuals with vibrant colours, deep contrast and enhanced brightness, all powered by intelligent algorithms and a sleek, modern design. Engineered to perform flawlessly in all lighting conditions, the display incorporates HARMAN’s proprietary real-time visual control technology, which dynamically adjusts image output to optimize power efficiency. Among its key innovations are the industry’s first cadmium-free Quantum Dot display with intelligent Blue Mini-LED control, 1200-nit peak brightness, true black levels and an expansive 95 percent NTSC colour gamut. The ultra-slim design, featuring bezels under five mm, ensures a seamless and sophisticated aesthetic.

This breakthrough builds on HARMAN’s longstanding partnership with Tata Motors, which began with the integration of JBL audio systems in Tata vehicles across India. With the Harrier.ev, the collaboration now extends to premium branded displays, reinforcing both companies’ commitment to innovation and superior in-car experiences.

Shilpa Dely, Vice President – Displays, HARMAN, said, “We’ve brought together Samsung’s cutting-edge consumer display innovation and HARMAN’s deep automotive expertise to create something truly unique: a first-of-its-kind, in-vehicle visual experience that brings living room TV-level brilliance to the road. We have finally closed the gap between consumer and automotive display technology – and we’re proud to debut this global breakthrough with our trusted partners at Tata Motors.”

Anand Kulkarni, Chief Products Officer, Tata Passenger Electric Mobility Limited, said, “We’re committed to delivering world-class technology to Indian consumers. Together with HARMAN, we're bringing the best of consumer display innovation in India’s most capable SUV, the recently launched Harrier.ev, transforming it into a true third living space after home and office. This collaboration sets a new standard for in-cabin experiences – not just in India, but around the world.”

Sanjeev Kulkarni, Vice President – Sales, HARMAN, said, “Our partnership with Tata Motors spans more than a decade and is built on a like-minded approach to innovation, along with a joint promise to deliver the very best in-cabin experiences to our customers,”. “From JBL premium audio to advanced intelligent cockpit solutions, HARMAN is a defining part of the Tata driving experience. With the introduction of our new display product, we’re proud to take that collaboration even further.”

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