9400 regenerative power supply module | Parameter setting
"CAN on board" system bus
Parameter data transfer
130 L EDS94ARNExxxx EN 2.3 - 06/2014
6.7.3.3 Read block parameters
Task:
The firmware version (code C00099) is to be read from the parameter set of the
controller with node address "12". The firmware version has a length of 11 ASCII characters
and is transferred as a block parameter. Within the user data, each block occupies the data
width from the 2nd to the 8th byte.
Telegram 1 to the drive: read request
Response telegram 1 from the drive: specification of the block length (11 characters)
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
0x060C 0x40 0x9C 0x5F 0x00 0x00 0x00 0x00 0x00
Explanations - telegram to drive
Identifier = 1536 + node address = 1536 + 12 = 1548 = 0x060C
(1536 = basic identifier of SDO1 to the controller)
Command = 0x40 = "read request" (request to read a parameter from the controller)
Index = 24575 - code number = 24575 - 99 = 24476 = 0x5F9C
Subindex = 0 (code C00099 has no subcodes)
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
0x058C 0x41 0x9C 0x5F 0x00 0x0B 0x00 0x00 0x00
Explanations - telegram from drive
Identifier = 1408 + node address = 1408 + 12 = 1420 = 0x058C
(1408 = basic identifier of SDO1 from the controller)
Command = 0x41 = "read response" (the response is a block telegram)
Index Same as for telegram to the drive
Subindex
Data 1 ... 4 = 0x0000000B = data length of 11 characters in the ASCII format
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