12 system bus "can on board – Lenze 8400 TopLine User Manual
Page 758
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12
System bus "CAN on board"
12.6
Structure of the CAN data telegram
758
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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Node address (node ID)
Every node of the system bus network must be assigned to a node address (also called node ID)
within the valid address range (1 ... 127) for unambiguous identification.
• Assigning a node address more than once within a network is impermissible.
• The own node address can be configured via the DIP switches or via code
Identifier assignment
The system bus is message-oriented instead of node-oriented. Every message has an unambiguous
identification, the identifier. For CANopen, node-oriented transfer is achieved by the fact that every
message has only one transmitter.
• The basic identifiers for network management (NMT) and the basic SDO channel (SDO1) are
defined in the CANopen protocol and cannot be changed.
• The basic identifiers of the PDOs are preset in the Lenze setting according to the "Predefined
Connection Set" of DS301 V4.02.
Tip!
If required, the identifiers of the PDOs and the identifiers for the sync telegram can be
changed via parameters/indices.
Identifiers of the process data objects
PDO synchronisation via sync telegram
The active identifiers fo the PDOs are displayed in
Object
Basis identifier (CANBaseID)
Direction
Network management (NMT)
0
0x0000
Sync
1)
128
0x0080
Emergency
1)
128
0x0080
Device system bus
PDO1
(Process data channel 1)
TPDO1
384
0x0180
Device system bus
RPDO1
512
0x0200
System bus device
PDO2
(Process data channel 2)
TPDO2
640
0x0280
Device system bus
RPDO2
768
0x0300
System bus device
PDO3
(Process data channel 3)
TPDO3
896
0x0380
Device system bus
RPDO3
1024
0x0400
System bus device
PDO4
2)
(Process data channel 4)
TPDO4
1152
0x0480
Device system bus
RPDO4
1280
0x0500
System bus device
SDO1
(Parameter data channel 1)
TSDO1
1408
0x0580
Device system bus
RSDO1
1536
0x0600
System bus device
SDO2
(Parameter data channel 2)
TSDO2
1472
0x05C0
Device system bus
RSDO2
1600
0x0640
System bus device
Heartbeat
1792
0x0700
Device system bus
Boot-up
1792
0x0700
Device system bus
1)
If you set the sync identifiers manually, observe the use of the emergency telegram, since it has the same COB-ID.
2)
From version 15.00.00