CANOpen-python testing for THOpenSCADA project

This repository is used for study and test a CANOpen protocol by using Christiansandberg's CANOpen-python for THOpenSCADA project. Link of christian's CANOpen : http://canopen.readthedocs.io/

To be able to understand CANOpen protocol. The list of main functionality in CANOpen has been tested.

• NMT (Network Management)
• SDO (Service Data Object)
• PDO (Process Data Object)
• Sync
• Heartbeat
• Emergency
• etc.

Test CANOpen hardward

Repository contains a folder of each tested CANopen devices which are commonly used in the industry. Here is the list of tested devices.

• Beckhoff LC5100 Remote I/O
• ... (In the future)

CANOpen Interface device for testing

• Korlan's USB2CAN URL: https://www.8devices.com/products/usb2can_korlan

Requirement

1. CANOpen for Python
   

pip install canopen

Or install with requirement.txt in this repository for all dependency modules

pip install -r requirement_canopen.text

2. Driver for CAN Interface which depended on the hardware you have. The list of supported CAN interface are shown in this page https://python-can.readthedocs.io/en/stable/interfaces.html

How to run the demo

For Bewckhoff LC5100 Remote I/O

1. Install CAN interface's driver
   For Korlan's USB2CAN

Windows

Install driver and use USB2CAN test application (Get from the driver installation) to test and see serial number of USB-to-CAN interface. This serial number will be used in can-python.

Linux

Install driver from this repository : https://github.com/8devices/usb2can
Tools : Use can-util to test CAN interface.

sudo apt-get install can-utils

Before using USB-to-CAN interface device with can-python, run this command to open 'SocketCAN' for USB2CAN interface

sudo ip link set can0 up

For a specific bitrate and sample-point

sudo ip link set can0 up type can bitrate 125000 sample-point 0.875

2. Run test_canopen_lc5100.py to test CANOpen functionality.

Example

(test NMT, OS=Linux)

python test_canopen_lc5100.py --os linux --nmt

(test PDO, OS=Windows)

python test_canopen_lc5100.py --os win --pdo