CAN-8123/CAN-8223/CAN-8423 user’s manual (Revision 3.00, May/22/2009) ------
87
z
Example for expedited transfer
Step 1. The Rx SDO message is sent to the CAN-8423 to access the object
entry with index 0x1400 and sub-index 02 stored in the communication profile
area. For example, the value of this object entry is changed to 5, as the node
ID for the CAN-8423 is set to 1.
11-bit COB-ID (bit)
Func Code
Node ID
8-byte Data (byte)
10 9 8 7 6 5 4 3 2 1 0
RTR
Data
Length
0
1
2
3 4 5 6 7
1 1 0 0 0 0 0 0 0 0 1
0
8
2F 00 14
02
05 00 00
00
SDO client
SDO server
(CAN-8123/CAN-8223/
CAN-8423)
ccs
: 1
n
: 3
e
: 1
s
: 1
m
: 00 14 02
d
: 05 00 00 00
Because the
n
=3, only the 4th byte is valid. Therefore, the feedback
value is 05.
Step 2. The CAN-8423 will reply with the message to finish the data download.
Then, users can use the upload methods to read back the value.
11-bit COB-ID (bit)
Func Code
Node ID
8-byte Data (byte)
10 9 8 7 6 5 4 3 2 1 0
RTR
Data
Length
0
1
2
3 4 5 6 7
1 0 1 1 0 0 0 0 0 0 1
0
8
60 00 14
02
00 00 00
00
SDO client
SDO server
(CAN-8123/CAN-8223/
CAN-8423)
scs
: 3
m
: 00 14 00