CAN-8123/CAN-8223/CAN-8423 user’s manual (Revision 3.00, May/22/2009) ------
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5.1.5 Abort SDO Transfer Protocol
In some conditions, the SDO client or SDO server will terminate the SDO
transmission. For example, the value of entries that users want to modify does
not exist or is read-only, even users wouldn’t continue the uncompleted SDO
protocol under some special situations. When these conditions occur, both the
client and the server can be activated to send the Abort SDO Transfer
message. The Abort SDO Transfer protocol is shown below.
cs
: command specified
4: abort transfer request
x
: not used, always 0
m
: multiplexer
It represents index and sub-index of the SDO
d
: contains a 4-byte “Abort Code” about the reason for the abort