Firmware
≤
11.00 - DMS 8.0 EN - 10/2011
L
487
8400 StateLine C | Reference manual
System bus "CAN on board"
Implemented CANopen objects
Example
Parameter data channel 2 of the controller with node address 4 shall be activated.
For this, bit 31 must be set to "0" (
≡
"SDO is valid") in subindices 1 and 2 of the object
I-
1201
.
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)
[10-7] Data telegram assignment for subindex 1
[10-8] Data telegram assignment for subindex 2
User data assignment
[10-9] User data assignment for writing to subindex 1
[10-10] User data assignment for writing to subindex 2
8th byte
7th byte
6th 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
6th 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
6th 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
6th byte
7th byte
8th byte
Command
Index
Subindex
Data 1
Data 2
Data 3
Data 4
0x23
0x01
0x12
0x02
0xC4
0x05
0x00
0x00
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