For network analyzing, monitoring, and recording

Copperhill Technologies, has introduced the JCOM.J1939 modules with optional Bluethooth connectivity to simulate, monitor, and record data traffic from J1939-based networks.

The company provides embedded systems for CAN-related developments. The J1939-to-USB gateway allows monitoring, simulating, and recording any PGN (parameter group number) as defined in the SAE J1939-71 standard plus diagnostic messages according to SAE J1939-73. In addition, the user can specify parameters through the JCOM1939 software for Windows, such as fuel consumption, vehicle speed, vehicle position, and more. And while the gateway does not simulate specific diesel engines, users can design and simulate any diesel engine by defining a set of corresponding PGNs, informs the manufacturer. The Windows-based software (JCOM1939 Monitor) displays the J1939 data traffic and allows scanning the network, simulating an ECU (electronic control unit), and responding to data request messages.

The board supports the J1939 higher-layer protocol according to J1939-81 Network Management (address claiming) and J1939-21 Transport Protocol (TP). It is also supported by a programming interface for Windows and Linux/Ubuntu applications, including a C/C++/C# source code for short time-to-market developments. The entire SAE J1939 protocol software, including all timing requirements, is stored on-chip, thus taking the burden off the main system (e.g., PC). The board uses a USB COM port to communicate with the PC, i.e., all data transfer is managed through a standard COM port access. The communication protocol between the board and the PC is well documented and thus allows porting to any computer system with a USB connection. Working source code libraries exist for Windows (C# under Visual Studio 2102/2013), Linux and its derivatives (C++ using Code::Blocks), and Raspberry Pi (C using the standard gcc compiler).

With all described features, the gateway allows the simulation of an SAE J1939 ECU using embedded solutions such as the Raspberry Pi, Beaglebone, Arduino, Teensy, and others but also PCs running Windows or Linux (incl. Ubuntu, Fedora, etc.). In addition, the SAE J1939 Starter Kit and Network Simulator allows the experienced engineer and the beginner to experiment with SAE J1939 data communication without needing to connect to a real-world J1939 network, i.e., a diesel engine. The starter kit consists of two SAE J1939 nodes and thus represents a functional network. Additionally, both nodes connect to their instance of the JCOM1939 Monitor software, allowing data transfer between the nodes.

Furthermore, the J1939-to-Bluetooth gateway represents a wireless and function-compatible version of the J1939-to-USB Gateway. It is certified for Bluetooth Version 2.1, and a BLE (Bluetooth Low Energy) option is also available.

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