5 network management (nmt), 1 communication phases of the can network (nmt), Network management (nmt) – Lenze 931K User Manual
Page 41: Communication phases of the can network (nmt), Canopen communication
CANopen communication
Network management (NMT)
Communication phases of the CAN network (NMT)
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41
KHB 13.0002−EN 4.1
5.5
Network management (NMT)
Via the network management, the master can carry out state changes for the entire CAN
network. For this purpose, the identifier with the highest priority (000
h
) is reserved.
5.5.1
Communication phases of the CAN network (NMT)
With regard to communication the controller knows the following states:
Status
Explanation
"Initialisation"
(Initialisation)
After the controller is switched on, the initialisation process starts. During this
phase the controller is not involved in the data exchange on the bus.
Furthermore, a part of the initialisation or the entire initialisation process can
be executed in each NMT status by transmitting different telegrams (see "state
transitions"). All parameters will be written with their set values.
After the initialisation is completed, the controller is in the "Pre−Operational"
status.
"Pre−operational"
(before ready for operation)
The controller can receive parameter data.
The process data is ignored.
"Operational"
(Ready for operation)
The controller can receive parameter data and process data.
"Stopped"
Only network management telegrams can be received.