CAN in AutomationCANopen
1.4K views
What is CANopen NMT used for?
What is CANopen NTM consists of and what are the states of the communication protocol?
CAN in AutomationCANopen
Answers
Top answer
CANopen Network Management (NMT) is a slave state machine that defines the communication behavior of a CANopen device.
The NMT state machine consists of these states:
- Initialization state - the device enters after power-up
- Pre-operational state - an indication that is ready to work and starts sending messages
- Operational state - PDO communication is only possible in this state
- Stopped state - a device in this state can only reach to received NMT commands
The NMT protocol is transmitted by the NMT master that is active in a CANopen network, forcing the CANopen devices to transit into the commanded NMT state upon receiving an NMT message.
NMT protocol message consists of a single CAN frame with 2 bytes length, where the first byte is the command specified and the second carries the Node-ID of the device that needs to perform the command (if the Node-ID is 0, all nodes have to perform the command).
You know a better answer?
The question about CAN in Automation CANopen has already been answered, but there may be a better solution or alternative available by now. If you know it, answer the question now and increase your reputation as an industry expert in our B2B community.
Related Questions
Node ID Changes using LSS?
Dear Sir/ Madam,
Under DS301 Profile of CANOpen Standard, when the Node ID is Changed using LSS Functionality. Will the COBID of the Error Control and...
Can DeviceNet devices be used on a CANopen network?
Have a soft PLC that uses CANopen. Would like to communicate to DeviceNet nodes on the network. Will this be possible?
We see the first one...
What is the CANopen protocol frame format?
From what fields is the CANopen frame consisted of and what is their purpose when it comes down to communication?
Stay up to date on CAN in Automation CANopen
Was the content helpful to you?
