FC 300 CANopen
MG.33.J1.02 VER. 050301 – VLT is a registered Danfoss trademark 41
Download segment
The download segment command is used when more than 5 bytes will be downloaded.
Client request:
0 Byte 1 8
7..5 ccs 4 x 3,2,1 n 0 c segment data
Server response:
0 Byte 1 8
7..5 ccs 4 t 3..0 X reserved
t: toggle bit
c: indicator for more segments
Byte 0
Bit 5-7 Bit 4 Bit 3..1 Bit 0
ccs / scs t toggle n c
0: Download seg. request
ccs
0: 1. Seg
starts with 0
0: all data valid
(size 7 byte)
0: more segments to be
downloaded
1: Download seg. response
scs
1: byte 7 no data
(size 6 byte)
0: no more segments to be
downloaded
2: - …
3: - 7: byte 2 - 7 no data
(size 1 byte)
Initiate upload
The initiate upload starts the SDO communication from the client to the server.
Client request:
0 Byte 1 4 8
7..5 ccs 4 ..0 x m index, sub index reserved
Server response:
0 Byte 1 4 8
7..5 ccs 4 x 3,2 n 1 e 0 s m index, sub index d data
Byte 0 Bytes 4-7
Bit 5-7 Bit 4 Bit 2,3 Bit 1 Bit 0
ccs / scs X n e s data
0: - 0 0: all data valid
(size 4 byte)
0 0 reserved
1: -
0 1: byte 7 no data
(size 3 byte)
0 1 numbers of bytes for
upload
2: init. upload request
ccs / scs
0 2: byte 6 - 7 no
data
(size 2 byte)
1 0 numbers of unspecified
Bytes for upload
3: -
0 3: byte 5 - 7 no
data
(size 1 byte)
1 1 data, length 4-n
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