# Canbus, Opencan and ISO BUS

Quick question,

I know about CanBus protocol. I'm interesting about ISOBUS and CanOpen. I know that those are exentsion of the CanBus protocol. So my question is:

1. Do ISOBUS and CanOpen need different hardware?
2. Do ISOBUS and CanOpen can operate on an existing CanBus network?
3. Do the changes for those protocol is on the software layer or is it on the chip/hardware layer?

Thanks!

• What sites have you googled for this information? Jan 26, 2020 at 15:34
• many, itis not clear if there is need for extra hardware components or not
– oak
Jan 26, 2020 at 16:05
• "CanBus" is a hardware and data link layer standard, it is not a protocol. Jan 28, 2020 at 9:50