Status Transitions - Lenze 8400 StateLine C Reference Manual

10.7.1

Status transitions

[10-3] NMT status transitions in the CAN network
Transition
(1)
(2)

(3), (6)
(4), (7)
(5), (8)
(9), (10), (11)
(12), (13), (14)

Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
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NMT command Status after
change
- Initialisation
- Pre-Operational
From here, the master changes the statuses for the entire network.
• A target address included in the NMT command defines the receiver(s).
• If the 8400 controller is configured as CAN master, the status is automatically changed to
"Operational" after a waiting time has expired (C00356/1), and the 0x0100 ("Start remote node")
NMT command is transmitted to all nodes.
• Data can only be exchanged via process data objects if the status is "Operational"!
0x01 xx Operational
Start remote node
0x80 xx Pre-Operational
Enter Pre-Operational
0x02 xx Stopped
Stop remote node
0x81 xx Initialisation
Reset node
0x82 xx
Reset communication
Meaning of the node address in the NMT command:
• xx = 0x00: If this assignment is selected, the telegram addresses all nodes (broadcast telegram).
The status of all nodes can be changed at the same time.
• xx = Node ID: If a node address is specified, only the status of the node with the corresponding
address changes.
L
8400 StateLine C | Reference manual
System bus "CAN on board"
Communication phases/network management
Effects on process/parameter data after status change
Initialisation starts automatically when the mains is
switched on.
• During initialisation, the controller is not involved in the
data exchange.
• After the initialisation is completed, the node sends a
boot-up message with an individual identifier and
automatically changes to the "pre-operational" status.
In this phase, the master determines the way in which the
node(s) takes/take part in communication.
Network management/sync/emergency telegrams as well
as process data (PDO) and parameter data (SDO) are active.
Optional: When the status is changed, event and time-
controlled process data (PDOs) are transmitted once.
Network management/sync/emergency telegrams and
parameter data (SDO) are active.
Only network management telegrams can be received.
All CAN-relevant parameters (CiA DS 301) are initialised with
the saved values.
All CAN-relevant parameters (CiA DS 301) are initialised with
the saved values.
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