2 network management telegram (nmt), Network management telegram (nmt), Communication manual 8400 motec canopen – Lenze E84DGFCC User Manual

Page 42

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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

2

0x02

Stop remote node

128

0x80

Enter Pre-operational

129

0x81

Reset node

130

0x82

Reset communication

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