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Testing The SAE J1939 to RS232 & USB Gateway By Copperhill Technologies

Posted by Wilfried Voss on

SAE J1939 to RS2322-USB Gateway Test Setup

In this post, I will demonstrate the test setup of our SAE J1939 to RS232 & USB Gateway. The JCOM.J1939.SER gateway is a high-performance, low-latency, serial vehicle network adapter for SAE J1939 applications. It allows any host device with an RS232 or USB port to monitor SAE J1939 data traffic and communicate with the SAE J1939 vehicle network. An SAE J1939 cable, suited for a 9-pin Deutsch connection, is included with the gateway. 

In order to simulate SAE J1939 data traffic, rather than connecting to a real-world diesel engine, we utilize our  SAE J1939 ECU Simulator Board With USB Port

In fact, both devices are based on the same hardware concept and firmware, however, with slight differences. The J1939-to-USB gateway is designed for simulation and monitoring of SAE J1939 data traffic under lab conditions. The RS232-to-J1939 gateway is designed for operation connected to a diesel engine's network in order to monitor SAE J1939 data traffic.

Moreover, both devices can be controlled per our free-of-charge JCOM1939 Monitor Software.

Two Instances of JCOM1939 Monitor

The above image demonstrate the operation of two instances of the Windows software, one connected to COM Port 3 (USB), the other connected to COM Port 27 (RS232).

Both devices can also operate when connected to other devices such as embedded systems or Linux machines. The serial protocol (identical whether it's the USB or RS232 gateway) is documented in detail, and there are programming samples for Linux, Raspberry Pi, and Windows.

Development Resources


Data Acquisition from HD Vehicles Using J1939 CAN Bus

Data Acquisition from HD Vehicles Using The SAE J1939 CAN Bus

Data Acquisition from HD Vehicles Using J1939 CAN Bus focusses on guiding the reader on how to acquire and interpret data from the in-vehicle network of diesel engine vehicles. The reader will learn how to transform messages to scaled engineering parameters and determine the available parameters on the vehicles and their accuracy and update rate.

Written by two specialists in this field, Richard (Rick) P. Walter and Eric P. Walter, principals at HEM Data, located in the United States, the book provides a clear road map for the data acquisition user. The authors supply a transparent and concise description of the CAN protocol plus a review of all 19 parts of the SAE International J1939 standard family.

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Programmable Converter With Dual CAN FD, LIN, RS-232 Ports And microSD Slot

The CANFD LIN Gateway by MACH SYSTEMS is an easy-to-use, easy-to-program router, data logger, and simulator that features two CAN FD channels, a LIN channel, an RS-232 port, a microSD card slot, and multiple digital and analog inputs and outputs. The firmware can be developed using C/C++ in a free-of-charge IDE, and the user can load the application [...]

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Industrial IoT 4G LTE Router & Gateway With Ethernet, RS232, RS485 Serial Ports Plus Digital I/O

The ICR-3200 LTE gateway by Advantech represents an excellent solution to connect IP or serial devices to a cellular network, allowing industrial M2M and IoT applications that comprise of kiosks, industrial PCs, HMIs, traffic controllers, meters, UPS systems, and more.Supporting LTE Cat.4 upload speeds of up to 50 Mbps and download speeds of up to 150 Mbps, the [...]

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Industrial-Strength USB To RS232, RS485, TTL (UART) Isolated Converter

WaveShare introduced their industrial USB to RS232/485/TTL isolated converter with original FT232RL. It features embedded protection circuits such as power isolation, ADI magnetical isolation, and TVS diode, and more. Also, the USB TO RS232/485/TTL gateway comes with an aluminum alloy enclosure, making it robust and durable for industrial requirements.The USB TO RS232/485/TTL converter is very easy [...]

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Programmable CAN Bus To RS232 Gateway For Communication Between Controllers

The b-CANCubeNano by b-plus is a fitting gateway for serial data communication between CAN Bus and EIA-232 networks.The product was designed primarily for the use in vehicles and mobile machines. It features a CAN Bus interface according to ISO 11898-2 to communicate, for instance, with other machine controllers. It also maintains an EIA-232 serial interface to interact with other serial [...]

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Local Interconnect Network (LIN) To Controller Area Network (CAN Bus) Converter

The LIN (Local Interconnect Network) bus is an inexpensive serial communications protocol, which effectively supports remote application within a car's network. It is particularly intended for mechatronic nodes in distributed automotive applications, but is equally suited to industrial applications. It is intended to complement the existing CAN network leading to hierarchical networks within cars.Controller Area Network [...]

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SAE J1939 Network Bridge With RS232/Wireless Connection

As part of another customer project, we have started work on an SAE J1939 network bridge device, which we call the jCOM.J1939.BRIDGE. The bridging serial hardware layer is RS232 in combination with a bit-stuffing protocol, similar to the protocol described at JCOM.J1939 PROTOCOL & PROGRAMMING INTERFACE (PDF).  Our customer will use the RS232 serial port for extension of [...]

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SAE J1939 (CAN Bus) To RS232 Gateway With USB Option

We at Copperhill Technologies always thrive in adding more products to our line of OBD-II and SAE J1939 devices. Our current focus is on a SAE J1939 to RS232 gateway that can also easily used to connect to a USB port. The firmware will be identical to that of our SAE J1939 to Bluetooth Gateway With [...]

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RS232 to USB Converter With Arduino Due Or Mega 2560

Just about everyone who is involved with serial communication will have his/her RS232 to USB converter. Today's PCs don't even bother to support RS232. Consequently, a USB converter is mandatory to monitor RS232 data traffic. All this appears to render the following project obsolete. However, when it comes to a protocol converter, i.e. the conversion [...]

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RS-232/RS-485/RS-422 Serial Transceiver with Internal Termination and Wide Output Swing

Exar Corporation, a supplier of analog mixed-signal products serving the industrial and infrastructure markets, expanded its family of single-chip RS-232/RS-485/RS-422 serial transceivers by adding the XR34350. The XR34350 features a wide ±10V RS-232 driver output that supports a wider range of RS-232 peripherals. Similar to the SP339, the XR34350 includes integrated cable termination and [...]

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