Parameter data transfer
Parameter data telegram examples
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Lenze · Decentralised frequency inverter 8400 motec (CANopen option) · EDS84DMOTCAN EN 4.0 - 02/2019
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9.3.2 Write parameters
Task: The rated current of the motor connected with I
rated
= 10.20 A (code C00088) is to be entered
into the inverter with the node address "2".
Telegram to the drive
Response telegram from drive (if data have been transmitted correctly)
Data 1 ... 4 Calculation
Value for motor current, (data type U16; display factor 1/100) 10.20 x 100 = 1020 (0x03 FC)
Identifier User data
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
0x0602 0x2B 0xA7 0x5F 0x00 0xFC 0x03 0x00 0x00
Explanations on the telegram to the drive
Identifier = 1536 + node address = 1536 + 2 = 1538 = 0x0602
(1536 = basic identifier SDO1 to the inverter)
Command = 0x23 = "Write Request" (write request of a parameter to the inverter)
Index = 24575 - code number = 24575 - 88 = 24487 = 0x5FA7
Subindex = 0 (code C00088 does not have any subcodes)
Data 1 ... 4 = 10.20 x 100 = 1020 = 0x000003FC
(motor current value; data type U32; display factor 1/100)
Identifier User data
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
0x0582 0x60 0xA7 0x5F 0x00 0x00 0x00 0x00 0x00
Explanations on the telegram from the drive
Identifier = 1408 + node address = 1408 + 2 = 1410 = 0x0582
(1408 = basic identifier SDO1 from the inverter)
Command = 0x60 = "Write Response" (acknowledgement of the write access from the inverter)
Index As in telegram to the drive
Subindex
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