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SDO communication Read (receive) method
The following flowchart shows the flow of the operation required in a user program for the
SDO communication reading process.
START
Set Station Address.
Station Address setting [UM 7C4B0]
Set Index.
Main - Index setting [UM 7C4B1]
Sub - Index setting [UM 7C4B2]
Set Data Width to perform SDO communication.
Data type setting [UM 7C4B3]
Bit width setting
①
Perform the read command request of
SDO communication.
Command request [UM 7C4B5] : "0x 1"
Communication result
When
[UM 7C4B6]="0x5555"
Communication
Result is;
FP7 MC Unit clears the read command request of SDO communication.
Command request
END
[UM 7C4B4]
Communication result
[UM 7C4B6] = "0xFFFF"
Communication result
[UM 7C4B6] = "0x0000"
[ UM 7C4B5 ] : "0x 0"
Confirm SDO communication error codes.
SDO communication error codes [UM 7C4B8–UM 7C4B9]
Correct communication settings according to
SDO communication codes.
13.9 SDO/PDO Communication
* This is set only when Data
type setting is set to "0x9".
①
SDO
communication
settings
SDO
communication is
being performed.
13-31
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