Site Information

 Loading... Please wait...

Blog

Improvements to our JCOM1939 Monitor & Simulation Software for Windows

Posted by Wilfried Voss on

JCOM1939 Monitor Software - New Data View ModeOur SAE J1939 gateways are steadily gaining popularity, so we developed a dedicated website that focuses on the associated JCOM1939 Monitor Software for Windows. Since July of this year, we have added new features, some small and some significant improvements.

With version 3.50.00, we have ceased support for older gateways, specifically those sold before 2022. The processors in these units are no longer available, and we have transitioned to the ESP32 processor. However, their latest firmware and monitor versions are still accessible on our jcom1939.com website.

However, since then, we have been busy and are currently at version 4.02.00, which we plan to release in the coming days.

The new features include displaying received and transmitted data. The older version scrolls with each new PGN, making it difficult to follow data during high busloads as the screen becomes too cluttered. The latest version updates the PGN data in just one static line with an attached counter. However, we continue to support the scroll mode by allowing the user to switch between both display modes.

Additionally, we enhanced user-friendliness by providing a detailed COM port description, which eliminates the need to access the Windows Device Manager to identify the gateway’s port.

Lastly, we have finally implemented an old idea to better support our customers. The issue is that many users are hesitant to read the dry user manual and find it easier to watch a video instead. Therefore, we have created a YouTube channel to visually demonstrate the JCOM1939 Monitor software's capabilities.

The first video introduces the JCOM1939 Monitor Pro software, demonstrating the basic steps of receiving and transmitting PGNs. We are currently developing an introduction to the SAE J1939 starter kit, showcasing the simulation of a diesel engine and the request for the VIN (Vehicle Identification Number).

For more information, please visit our website at jcom1939.com. We have invested significant effort in documenting everything related to the Windows app and are still adding more. And don’t forget to sign up for our newsletter…;-)


SAE J1939 Starter Kit And Network Simulator

SAE J1939 Starter Kit and Network Simulator

Our JCOM.J1939 Starter Kit and Network Simulator was designed to allow experienced engineers and beginners to experiment with SAE J1939 data communication without needing to connect to a real-world J1939 network, i.e., a diesel engine. 

To establish a network, you need at least two nodes. This applies especially to CAN/J1939, where the CAN controller will shut down after transmitting data without receiving a response. Therefore, our jCOM.J1939 Starter Kit and Network Simulator consist of two J1939 nodes: our jCOM.J1939.USB, an SAE J1939 ECU Simulator Board with USB Port.  More Information...

Diesel Diagnostic Scan Tool for J1587/J1708, J1939 Trucks

The KZYEE KC601 scanner module is the newest portable heavy-duty vehicle code reader. It can quickly and efficiently read DTCs in the truck's electrical control system, diagnose the fault location, and find the cause of the fault. It is beneficial for all auto repair shops to read and clear fault codes and read live data. The scanner [...]

Read More »


SAE J1939 and OBD2 Heavy Duty Truck Scanner and Diagnostics

DPF Force Regen & Reset for Cummins Caterpillar Engine -- Reset and clean your DPF professionally, quickly, and efficiently to ensure your engine runs smoothly and meets emissions standards. This all-in-one solution saves you money on maintenance costs. The Inspection Record feature records all DPF inspections to help track and manage maintenance schedules. Full System Diesel [...]

Read More »


Turn Your Smartphone into a Heavy-Duty Diagnostics Tool

Turn your smartphone into a user-friendly HD diagnostic tool. Download and sync via Bluetooth to the free Diesel Decoder smartphone app to view vital diagnostic and trip data. When your rig throws a fault code, the Diesel Decoder is your reliable companion. It removes the guesswork, guiding you to either clear the codes and continue your journey [...]

Read More »


Display for Off-Road Vehicle Engines with J1939 interface

The EngineMonitorPlus is a display and control device with a CAN Bus interface designed specifically for use in off-road vehicle engines. It supports the most common messages (PGN, Parameter Group Number) of the SAE J1939 standard. Furthermore, it provides a simple configuration of displayed parameters, errors (DM1), and service messages, allowing the user to configure and [...]

Read More »


Diesel Engine Fluid (DEF) Sensor Simulator - Background Info

Before Reading, Please Consider! The DEF Sensor Simulator is not a ready-made product. It was developed by a group of automotive engineers as a concept to bypass faulty DEF sensors. It consists of a list of components with an associated control code, and you will need to assemble the simulator yourself.  These engineers selected a component offered [...]

Read More »


SAE J1939 Data Traffic Generator For Diesel Engine Network Simulation

I am writing this post to respond to multiple inquiries from newcomers to the SAE J1939 technology. Most questions are like, "Can your device simulate any PGN, for instance, engine speed in rpm?" or "Can your device simulate a 2014 Tonka Flex diesel engine?" The short answer is yes, but things are a bit more [...]

Read More »


Vehicle Computer Architectures Help Improving Diesel Engine Performance And Lifetime Costs

Engineers are leaving no stone unturned in their unceasing drive to improve fuel economy, leveraging electronics, monitoring airflow, and using data from outside the vehicle. Computer architectures are being revised to simplify controls and decrease sensor counts, helping keep costs in line. Computers continuously monitor and control the engine, transmission, after-treatment systems, and more. Powerful devices [...]

Read More »


SAE J1939 Starter Kit And Network Simulator - Quick Start

Our  jCOM.J1939 Starter Kit And Network Simulator is designed to allow the experienced engineer as well as the beginner experimenting with SAE J1939 data communication without the need of connecting to a real-world J1939 network, i.e., a diesel engine. To establish a network, you need at least two nodes, and that fact applies especially to the CAN Bus [...]

Read More »