
Manual_GXP5_417_Lift_EN.doc
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Baumer IVO GmbH & Co. KG
04.05.11
Villingen-Schwenningen,
Germany
3.4.6. Network management services
The network management can be divided into two groups:
With the NMT services for
device control
, the bus nodes can be initialized, started and stopped.
In addition, there are also NMT services for
connection monitoring
.
Description of NMT commands
The commands are transferred as unconfirmed objects and are structured as follows:
Byte 0
Byte 1
Byte 2
COB-ID = 0
Command Byte
Node Number
COB-ID
for NMT commands is always zero. The Node-ID is transmitted in Byte 2 of the NMT command.
Command Byte
Command Byte
Description
In State Event Drawing
01h
Start Remote Node
1
02h
Stop Remote Node
2
80h
Enter Pre-Operational Mode
3
81h, 82h
Reset Remote Node
4, 5
The
node number
corresponds to the Node-ID of the desired node. With none number = 0 all nodes are
addressed.
NMT State Event
Following initialization the encoder is in the Pre-Operational mode. In this state SDO parameters can be read
and written. To request PDO parameters, the encoder must first be run in the Operational Mode state.
Power on or Hardware Reset
Init
Pre-Operational
Operational
Stopped/Prepared
1
3
2
1
3
2
4/5
BootUp Message
4/5
4/5