
E94AYCCA communication manual (CANopen®)
Implemented CANopen objects
166
L
EDS94AYCCA EN 5.0 - 06/2012
Example
The parameter data channel 2 of the controller with the node address 4 is to 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").
Both "Write request" commands must be transmitted from the master to the nodes via
the basic SDO channel.
Calculation of the identifiers
Identifier (COB-ID) = basic iden node address (node ID)
Basic identifier SDO2 from the master to the drive: 1600 (0x640)
identifier = 0x640 + 0x4 = 0x644
Basic identifier SDO2 from the drive to the master: 1472 (0x5C0)
identifier = 0x5C0 + 0x4 = 0x5C4
Resulting data (data 1 ... data 4)
[14-11] Data telegram assignment for subindices 1
[14-12] Data telegram assignment for subindices 2
Assignment of the user data
[14-13] Assignment of the user data for writing the subindex 1
[14-14] Assignment of the user data for writing the 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