Lenze · Decentralised frequency inverter 8400 motec (CANopen option) · EDS84DMOTCAN EN 4.0 - 02/2019 39
Data transfer
Communication phases/network management
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
7.2.2 Network management telegram (NMT)
The telegram for the network management contains the identifier "0" and the command included
in the user data, which consists of the command byte and the node address:
[7-3] Network management telegram for changing over the communication phases
One node, the CAN master, is responsible for switching over the communication phases in the entire
network. The role of the CAN master can also be taken over by the inverter.
Parameterising the Inverter Drives 8400 motec as CAN master
( 40)
Example :
Data can only be exchanged via process data objects if the status is "Operational". If the CAN master
is supposed to switch all nodes connected to the bus from the "Pre-operational" communication
status to the "Operational" communication status, the identifier and user data in the transmission
telegram must be set as follows:
• Identifier: 0x00 (network management)
• User data: 0x0100 ("Start remote node" NMT command to all nodes)
%LW %LW %LW %LW %LW %LW %LW %LW %LW
,GHQWLILHU 8VHUGDWD%\WH
&2%,'
FRPPDQG
VSHFLILHU
FV
QRGH
DGGUHVV
QRGH,'
Command specifier (cs) NMT command
dec hex
1 0x01 Start remote node
20x02Stop remote node
128 0x80 Enter Pre-operational
129 0x81 Reset node
130 0x82 Reset communication
To Next Page
Loading...
Need help?
General