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Quick Reference: Controller Area Network - CAN Bus - Versus Industrial Ethernet
At first glance, a comparison of the two networking technologies, Controller Area Network (CAN Bus) and Industrial Ethernet may appear as a battle between David and Goliath. On one side, you have the clear underdog, CAN Bus with its 1 Mbit/sec baud rate, its limited network length, and a maximum data length of 8 bytes per message. [...]
SAE J1939 Message Format And Interpretation Of PGNs
It happens on a regular basis that I am contacted by a user of our SAE J1939 ECU Simulator Board With USB Port, complaining that our device does not display a PGN correctly or modifies the PGN before transmitting. The real problem here is a misinterpretation of the PGN and its purpose. For instance, a PGN [...]
RobotDyn - Data Logger Shield For Arduino - Development Resources
To mention it upfront, we don't sell the data logger shield for the Arduino. As a matter of fact, I bought this board out of pure curiosity, because it fits and complements our Arduino-Based ECU Development Board With Dual CAN Bus Interface. This combination bares the potential for creating a low-price CAN Bus data logger.I was [...]
Tablet PC For In-Vehicle Networks Supports CAN Bus - SAE J1939 And Gigabit Ethernet Interfaces For IoT Applications
The X7R from Waysion Technology (China) is a 7-inch tablet PC designed to operate within truck in-cab and other applications within harsh environments.A CAN Bus interface maintains data communications via an extension cable, and it supports the 29-bit CAN-identifier. If required, the SAE J1939 higher-layer protocol can be implemented using an additional converter. The device receives data from CAN [...]
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 [...]
The Difference Between SAE J1939 And CAN Bus - The Extended CAN Bus Protocol
The following is an excerpt from A Comprehensible Controller Area Network by Wilfried Voss. The standard CAN message frame uses an 11-bit message identifier (CAN 2.0A), which is sufficient for the use in regular automobiles and any industrial application, however, not necessarily for off-road vehicles.The Society of Automotive Engineers (SAE) Truck and Bus Control and Communications Subcommittee [...]
JCOM1939 Monitor Software - New Version 3.31.00
Our SAE J1939 ECU Simulator Board With USB Port allows any host device (e.g., PC) with a USB COM port to monitor SAE J1939 data traffic and communicate with the SAE J1939 vehicle network, which makes it also suitable to simulate SAE J1939 data traffic. The simulation of SAE J1939 signals (i.e., PGNs) is a [...]
SAE J1939 Data Monitoring And Simulation With The Arduino
The following is an excerpt from SAE J1939 ECU Programming & Vehicle Bus Simulation with Arduino by Wilfried Voss In general, there are three different intentions for connecting to a J1939 vehicle network: Mere monitoring, processing, and display of network data traffic. All functions as described under 1. but extended by the ability of sending data into the J1939 [...]
SAE J1939 Transport Protocol (TP) Functions
The following is an excerpt from A Comprehensible Guide To J1939 by Wilfried Voss. Even though extremely useful in passenger cars and small industrial applications, CAN alone was not suitable to meet the requirements of truck and bus communications, mainly since its communication between devices is limited to only 8 bytes per message. However, it is possible [...]
SAE J13939 Data Recorder With Raspberry Pi Zero
Our jCOM.J1939.USB gateway board is a vehicle network adapter for SAE J1939 applications, which allows any host device with a USB COM port to monitor SAE J1939 data traffic and communicate with the SAE J1939 vehicle network.The board supports the complete SAE J1939 protocol according to SAE J1939/81 Network Management (Address Claiming) and SAE J1939/21 [...]