2 network management telegram (nmt), Network management telegram (nmt), 9"can on board" system bus – Lenze 9400 User Manual
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9
"CAN on board" system bus
9.5
Communication phases/network management
304
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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9.5.2
Network management telegram (NMT)
The telegram for the network management contains identifier "0" and the command included in
the user data which consists of the command byte and the node address:
[9-5]
Network management telegram for changing over the communication phases
The communication phases are changed over by a node, the CAN master, for the entire network. The
CAN master can also be a controller.
Parameterising the controller as CAN master
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
2
0x02
Stop remote node
128
0x80
Enter Pre-Operational
129
0x81
Reset node
130
0x82
Reset communication