In a recent article, JCOM1939 Monitor Update Adds CAN Bus Diagnostics and Silent Monitoring Mode, we introduced several improvements currently being prepared for the JCOM1939 Monitor software for Windows. The upcoming release adds improved CAN Bus diagnostics, including receive and transmit error counters, CAN controller status information, CAN Bus load, and…
Posts tagged as “JCOM1939 Monitor”
Modern heavy-duty vehicles and industrial equipment often contain dozens of Electronic Control Units (ECUs) communicating over an SAE J1939 network. During manufacturing, every ECU must be verified before it leaves the production line. Whether the product is an engine controller, telematics unit, instrument cluster, display, gateway, data logger, or sensor…
It has been a while since we released new functionality for the JCOM1939 Monitor software for Windows, but recent customer feedback inspired several improvements that make the software even more valuable during development, troubleshooting, and diagnostics. The latest update introduces two important features: Display of the CAN Bus network condition,…
Why We Created the J1939 Community If you work with SAE J1939, you already know that finding reliable information isn’t always easy. While the standard itself is comprehensive, applying it to real-world embedded systems, diagnostics, CAN bus monitoring, or software development often raises questions that aren’t answered by the specification…
Why the SAE J1939 Starter Kit Is the Best Choice for Learning and Developing Embedded J1939 Systems When engineers first enter the world of SAE J1939, they often ask a simple question: Should I start with a single J1939 gateway or buy the complete Starter Kit? While the SAE J1939…
If you are serious about developing CAN or CAN FD applications, there is one tool that will save you more time, eliminate more frustration, and improve your software quality more than almost anything else: a professional CAN analyzer. Many engineers begin by connecting a microcontroller to a CAN network, sending…
When engineers troubleshoot a CAN network, they usually focus on the messages flowing across the bus. They check identifiers, decode data bytes, and verify timing. While that is certainly important, there is another source of diagnostic information that is often overlooked—and in many cases, it provides the fastest path to…
In previous quick demos, we focused on SAE J1939 parameters that are transmitted periodically, such as engine speed, vehicle speed, fuel level, and engine temperatures. These messages are broadcast automatically at predefined intervals, allowing any node on the network to receive the data without explicitly asking for it. The Vehicle…
Engine speed is one of the most frequently monitored parameters in any SAE J1939 network. Whether you are developing a dashboard, testing an engine ECU, validating telematics software, or learning how J1939 communication works, engine speed is often the first parameter engineers look at. In this post, we will explain…
One of the questions that recently crossed my mind was whether our existing SAE J1939 gateways and monitoring tools could be useful in the agricultural sector, specifically for monitoring ISOBUS networks. The short answer appears to be: Yes, in many cases they can. The longer answer is a bit more…
