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11
System bus "CAN on board"
11.11
CANopen objects implemented | I-1201
764
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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Example
Parameter data channel 2 of the inverter with node address 4 shall be activated.
• For this purpose, bit 31 in the subindexes 1 and 2 of the
object must be set to the value
"0" (
≡
"SDO valid").
• The master must send the two "write request" commands to the nodes via the basic SDO
channel.
Identifier calculation
• Identifier (COB-ID) = basic iden node address (node ID)
• Basic identifier SDO2 from master to drive: 1600 (0x640)
Identifier = 0x640 + 0x4 = 0x644
• Basic identifier SDO2 from drive to master: 1472 (0x5C0)
Identifier = 0x5C0 + 0x4 = 0x5C4
Resulting data (data 1 ... data 4)
[11-7] Data telegram assignment for subindex 1
[11-8] Data telegram assignment for subindex 2
User data assignment
[11-9] User data assignment for writing to subindex 1
[11-10] User data assignment for writing to subindex 2
8th byte
7th byte
6. byte
5th byte
Data 4
Data 3
Data 2
Data 1
Bit 31
Bit 30
Bit 29 ... bit 11
Bit 10 ... bit 0
0
0
Extended identifier = 0
11-bit identifier = 0x644
0x00
0x00
0x06
0x44
8th byte
7th byte
6. byte
5th byte
Data 4
Data 3
Data 2
Data 1
Bit 31
Bit 30
Bit 29 ... bit 11
Bit 10 ... bit 0
0
0
Extended identifier = 0
11-bit identifier = 0x5C4
0x00
0x00
0x05
0xC4
1st byte
2nd byte
3rd byte
4th byte
5th byte
6. byte
7th byte
8th byte
Command
Index
Subindex
Data 1
Data 2
Data 3
Data 4
0x23
0x01
0x12
0x01
0x44
0x06
0x00
0x00
1st byte
2nd byte
3rd byte
4th byte
5th byte
6. byte
7th byte
8th byte
Command
Index
Subindex
Data 1
Data 2
Data 3
Data 4
0x23
0x01
0x12
0x02
0xC4
0x05
0x00
0x00