The Industrial Raspberry Pi Forum

Hello,

this is the first time for me using a RevPi PLC. I bought the RevPi Connect4 and now I want to use the CAN-Bus signal of a NOx-Sensor (see attached data sheet of the sensor). The current solution uses a Siemens S7-300 with a CAN to PROFINET-Converter but as far as I understand I cannot use RevPi Gateway Modules in combination with the RevPi Connect4. I could convert the CAN-Bus signal to RS485 but I am not quite sure wether this is the best idea regarding the performance or real time availability of the data. The NOx-sensor supplier also offers a module which converts the CAN-Bus signal to a 4-20mA signal (see also attached data sheet). But honestly, I am looking for alternatives. Do you maybe have a cost effective idea how to use the CAN-Bus signal with a RevPi Connect4?

Thank you very much in advance

Best regards

Nils

Hello,

It's great that you're getting started with the RevPi Connect4!

One of the most straightforward solutions is to use a USB-to-CAN adapter. The RevPi Connect4 supports USB devices, and with the right drivers, you can easily interface with CAN-Bus via a USB port. Here are some points to consider:

• Cost-Effective: USB-to-CAN adapters are relatively affordable and widely available.

• Ease of Use: Many of these adapters come with driver support for Linux, which should be compatible with the RevPi.

While you could convert the CAN-Bus signal to RS485, this might introduce latency and complicate the setup, potentially affecting real-time performance. RS485 is typically used for longer distance communication and might not be the best fit for high-speed CAN-Bus signals, especially if timing and synchronization are critical.

Given your requirements, I recommend starting with either a USB-to-CAN adapter

Best Regards

Ulrich Kouatang Biakoup | field application engineer

Hello,

thank you for your advice! Now I want to use an IXXat USB-to-CAN Compact-Converter. For this application, I would need a suitable SocketCan-Driver or any other implementation of CAN protocols for the Linux OS of my RevPi Connect4. Can you help me regarding the implemention?
I am using the RevPi Bullseye 32-bit (02/2024)

Thanks in advance!

Nils