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Baumer_GIM700DR_CANopen_EN_V1.00_MNL.docx
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27.04.21
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Description of the NMT command
The commands are transmitted as unconfirmed objects and are structured as follows:
Identifier
Byte 0
Byte 1
COB-ID = 0
Command byte
Node-ID
The
COB-ID
for NMT commands is always zero. The Node-ID is transmitted in byte 1 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 state
3
81h, 82h
Reset remote node
4, 5
The
node number
corresponds to the Node-ID of the required users. With node number = 0, all users are
addressed.
NMT state event
Following initialization, the sensor is in the pre-operational state. In this status, SDO parameters can be read
and written. In order to request PDO parameters, the sensor must first be moved to the operational state.
Power on or hardware reset
The various NMT states
Init
Following initialization, the sensor logs on to the CAN bus with a Boot Up message. The sensor then goes
automatically to the pre-operational state.
Init
Pre-Operational
Operational
Stopped/Prepared
Power on oder Hardware Reset
1
3
2
1
3
2
4/5
BootUp Message
4/5
4/5