#Product Trends
CANopen communication system (Part 2)
It is worth noting that with the introduction of CAN FD, CANopen FD, as the next generation CANopen standard, may play an increasingly important role.
There are 3 modes of device/node communication: master/slave, client/server and producer/consumer.
letter of agreement
Protocols used for communication, such as configuring nodes (SDO) or transmitting real-time data (PDO), etc.
device status
A single device supports different states. A "master" node can change a "slave" node, including operations such as reset.
object dictionary
Each device has an OD with entries specifying device configuration etc., which can be accessed via SDO.
spreadsheet
EDS is a standard file format for OD entries, which allows service tools to update devices.
device settings file
