2 network management telegram (nmt), Network management telegram (nmt), 9"can on board" system bus – Lenze 9400 User Manual

Page 304

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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

( 305)

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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