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Network Management
4.8.3
NMT protocol (node control)
The NMT protocol is used by the NMT Master to control the NMT state of remote nodes. Only the NMT
Master is allowed to produce this protocol.
The active NMT master ignores NMT messages with the Node ID 0 (all nodes).
NMT Master
Fig. 4-27: Node control
4.8.4
NMT slave identification
The NMT start-up master and the LSS master are using the NMT slave identification data to identify the
NMT slave before configuring the NMT slave. If the configured identification data on the NMT master
and the response from the NMT slave are different, the NMT start-up master service will stop the start-
up of this NMT slave.
The sub-index corresponds to the NMT slave Node ID. The default value 0 means "not- configured"
and the NMT master will skip this entry. For the LSS Master, all NMT slave identification data need to
be configured. For the NMT Startup Master the NMT slave identification entries are optional.
Object 1F84
The sub-index corresponds to the node ID.
The value refers to the object 1000
Object 1F85
The sub-index corresponds to the node ID.
The value refers to the object 1018
Object 1F86
The sub-index corresponds to the node ID.
The value refers to the object 1018
MELSEC-L Series – CANopen€ Module ME3CAN1-L
Request
Command
specifier
Command specifier (1 byte)
1
= Start
2
= Stop
128 = Pre-operational
129 = Reset application
130 = Reset communication
, Sub-index 01
to 7F
H
H
H
, Sub-index 01
to 7F
H
H
H
, Sub-index 01
to 7F
H
H
H
CAN-ID = 0
Node-ID
Node-ID (1 byte)
0
1–127 = Selected node
: Device Type
H
sub-index 00
of the corresponding node ID.
H
: Vendor identification
H
sub-index 01
of the corresponding node ID.
H
: Product code
H
sub-index 02
of the corresponding node ID.
H
Functions
NMT Slaves
Indication
Indication
Indication
= All nodes
4 – 37
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