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SAE J1939 Gateway And Data Logger With Real-Time Clock - July 8, 2020

Posted by Wilfried Voss on

SAE J1939 Gateway And Data Logger With Real-Time Clock

Our SAE J1939 Gateway And Data Logger is ideal for vehicle fleet management (trucks, buses, agricultural equipment, and any other diesel engine application), prototype field testing, diagnostics, or reverse engineering. The SAE J1939 Gateway And Data Logger records SAE J1939 message frames (PGNs) onto an onboard MicroSD memory card and timestamps them with a real-time clock (RTC). Alternatively, it can be used for mere SAE J1939 data monitoring and viewing.

This product is under current development with a targeted release in September of 2020. The following represents an update on the current development progress.

Update 07-08-2020

Two prototypes of the data logger PCB are now available for testing:

The hardware design is based on our SAE J1939 Gateway Module With USB Port, RTC, MicroSD Memory Card. We have extended the board with power-supply components to support a power input range of 7 VDC to 36 VDC as it applies to diesel engine operation.

The terminals for power and CAN Bus connection will be replaced by a 9-pin DSUB connector, while the USB connection will be changed from USB-mini to a USB micro, which was designed for operation under harsh environmental conditions (dust, splash-water).

For the same reason (dust and splash water proof), the SD card will not be accessible from the outside. It can be replaced, if necessary, by opening the enclosure's front plate and sliding the board to the outside.

The plan is to create a firmware that allows the unit to act as a USB memory stick, which eliminates the need for physical access.

Next Steps

  1. Hardware Functionality Test. As soon as the hardware has been successfully tested, we can start the manufacturing process, which takes about four weeks.
  2. Firmware Extension: As I mentioned before, the board is based on an existing design. Consequently, we will be using the same firmware as a starting point. We will post tested updates on the product page.

SAE J1939 Starter Kit And Network Simulator

SAE J1939 Starter Kit And Network Simulator

Our JCOM.J1939 Starter Kit And Network Simulator is designed to allow the experienced engineer as well as the beginner to experiment with SAE J1939 data communication without the need of connecting to a real-world J1939 network, i.e. a diesel engine. It may sound obvious, but in order to establish a network, you need at least two nodes, and that fact applies especially to CAN/J1939 where the CAN controller will basically shut down after transmitting data without receiving a response. For that reason, our jCOM.J1939 Starter Kit And Network Simulator consists of two J1939 nodes, namely our jCOM.J1939.USB, an SAE J1939 ECU Simulator Board With USB Port.

The jCOM.J1939.USB gateway board is a high-performance, low-latency vehicle network adapter for SAE J1939 applications. The board supports the full SAE J1939 protocol according to J1939/81 Network Management (Address Claiming) and J1939/21 Transport Protocol (TP).

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