User guide
Communication manual 8400 motec CANopen
Data transfer
Communication phases/network management
42 L EDS84DMOTCAN EN 3.0 - 11/2011
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
The change-over of the communication phases for the entire network is carried out by one
node, the CAN master. The function of the CAN master can also be carried out by the
controller.
Parameterising the Inverter Drives 8400 motec as CAN master
( 43)
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