Can Bus A/B/Fd 2.0 - Glavanically Isolated Daughter Card; Overview; Configure The Card Using Ism; Can Bus Programming - HPE Edgeline EL300 Getting Started Manual

2x CAN Bus A/B/FD 2.0 - Glavanically Isolated
Daughter Card

Overview

HPE implemented a two channel CAN bus that communicates through a single serial port. Each channel
is associated with a DE-9 (commonly referred to as "DB-9") connection on the daughter card. All
communication is done through the single serial port and each channel is individually addressed through
the CAN protocol. A number of CAN commands have been implemented to allow CAN communication.
These commands are described in Appendix A of this document.

Configure the Card Using iSM

The Integrated System Manager (iSM) provides a facility for changing the modes of the card. The only
option available involves enabling or disabling termination of the CAN bus.

CAN Bus Programming

There are several programming languages that can interact with the HPE CAN bus. The following
programming examples use C and Python to demonstrate how the interaction works and are not
necessarily complete.

Windows

Before programming the CAN serial port on Windows, the correct COM port for the adapter must be
determined. To do this, perform the following steps:
Procedure
1. Start Windows Device Manager and click Ports.
2. Choose a COM port, and then right-click Properties.
4 2x CAN Bus A/B/FD 2.0 - Glavanically Isolated Daughter Card