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Guide to SAE J1939 - Parameter Group Number Compilation
The following is an excerpt from A Comprehensible Guide To J1939 by Wilfried Voss. For internal purposes, the parameter group number is extended to 24 bits = 3 bytes, where the most significant 6 bits are always set to zero. Each ECU must accomplish this process individually; this procedure is not part of the CAN standard. To compile [...]
Telematics Gateway For Automatic SAE J1939 and ISOBUS Scanning and Parsing
The CANUp telematics gateway by Technoton couples the functionality of two vehicle data interfaces, a digital-to-analog converter and an online GPS tracking device. The gateway scans and automatically parses 10 000 SAE J1939/71 and ISOBUS parameters and transmits selected data to a web-based telematics server or by email/SMS to a user. It applies edge computing algorithms for onboard [...]
CAN Bus Bolt Connects Industrial Machinery And Devices to Wireless Networks, WiFi And Bluetooth
HMS Networks introduced its Anybus Wireless Bolt CAN gateway, providing CAN Bus communication via WiFi or Bluetooth. The device builds on the success of Anybus Wireless Bolt, which is applied to wireless Ethernet access. Like its predecessor, the gateway for bolt-on-machine mounting is suitable for heavy-duty machinery and demanding industrial applications. Applications include warehouse installations and AGVs (Automated [...]
SAE J1939 Data Scanner Monitors Multiple PT1000 Inputs From A Diesel Engine
Axiomatic Technologies introduced their AX184200 20 PT1000 RTD scanner with CAN Bus (SAE J1939) connection. It features rugged packaging and watertight Deutsch IPD connectors for an IP67 rating. The system does not require additional programming or configuration. The scanner monitors 20 2-wire PT1000 inputs from a diesel engine and forwards the temperature information to the engine control [...]
Telematics Gateway Connects to Multiple SAE J1939 / ISOBUS Sensors
The CANUp telematics gateway by Technoton represents a multi-functional tool for advanced telematics systems combining data interface features, digital-to-analog converter, and online GPS/GLONASS tracker. The telematics gateway allows the easy and error-free implementation of a complex telematics system that uses many onboard smart-sensors and devices necessary for monitoring multiple control points: fuel tanks, engines, upper equipment, trailed/attached [...]
Controller Area Network (CAN Bus) Tutorial - Higher Layer Protocols
The following is an excerpt from A Comprehensible Controller Area Network by Wilfried Voss. Even though highly influential in automobiles and small applications, the CAN Bus technology alone is not suitable for machine automation since its communication between devices is limited to only 8 bytes. Consequently, higher layer protocols such as CANopen for machine control, DeviceNet for factory [...]
Controller Area Network (CAN Bus) Tutorial - Extended CAN 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 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 had [...]
A Simple SAE J1939 to USB Gateway with the Arduino Uno, Mega 2560, Due, Teensy, ESP32
The following is an excerpt from SAE J1939 ECU Programming & Vehicle Bus Simulation with Arduino by Wilfried VossI deem it necessary to clarify the definition of “SAE J1939 to USB Gateway” because there are several variants of gateway applications.If you browse through the Internet in search for SAE J1939 gateways, you will primarily find CAN [...]
What is the Difference Between SAE J1939 and NMEA 2000?
After developing and programming multiple SAE J1939 devices over the years, I was curious to determine the difference between SAE J1939 and NMEA 2000. There are some valid reasons why I didn't consider an expansion into NMEA 2000, and they all have to do with the immense costs related to NMEA 2000 development. First of [...]
Build an ELD Better, Faster, and Cheaper Than KEEPTRUCKIN, Samsara, and Others
To mention it upfront, I am not suggesting building the best ELD (Electronic Logging Device) solution in the market. Such systems already exist, and while I like the idea of disrupting the market, I deem such an attempt extremely time-consuming, thus expensive, and most likely not worth the efforts. In other words, KEEPTRUCKIN and Samsara [...]