3. SLMP
3 - 5
3.4.1 SDO Upload (CiA 402 object read)
When the slave stations (servo amplifiers) receive the CiA 402 object read request from the master station
(external device), they return a value of the object corresponding to the specified Index or Sub Index.
(1) Request message (command and the following)
Command Sub
command
Index
Sub
Index
Reserved
Number of data
value
L H L H L H - - L H
20h
40h
01h
00h
Refer to (3) in this section for details.
(2) Response message
(a) At normal completion (end code and the following)
End code
Index
Sub
Index
Reserved
Number of data
value
Read data
L
H
L
H
-
-
L
H
L or H (variable)
00h
00h
Refer to (3) in this section for details.
(b) At abnormal completion
The response message is the same as that of 3.2 (2) (b).
(3) Item list
Item Size
Endian
Description
Command 2
bytes
Little
4020h
Sub command
2 bytes
Little
0001h
Index
2 bytes
Little
Specify Index of the object. (Refer to chapter 10.)
For the response message, the value specified in the request message is
stored.
Sub Index
1 byte
Little
Specify Sub Index of the object. (Refer to chapter 10.)
For the response message, the value specified in the request message is
stored.
Reserved
1 byte
00h (fixed)
Number of data value
2 bytes
Little
Read data: 00h (fixed)
Read data
Variable
Little
The response data of the object is stored.
3.4.2 SDO Download (CiA 402 object write)
When the slave stations (servo amplifiers) receive the CiA 402 object write request from the master station
(external device), they write a specified value to the object corresponding to the specified Index or Sub
Index.
(1) Request message (command and the following)
Command Sub
command Index
Sub
Index
Reserved
Number of data
value
Write data
L H L H L H - - L H
L
or
H
(variable)
20h
40h
02h
00h
Refer to (3) in this section for details.
(2) Response message
(a) At normal completion (end code and the following)
End code
Index
Sub
Index
Reserved
Number of data
value
L H L H - - L H
00h
00h
Refer to (3) in this section for details.
Summary of Contents for MR-J4-_GF
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Page 185: ...8 TROUBLESHOOTING AT POWER ON 8 2 MEMO ...
Page 227: ...9 MANUFACTURER FUNCTIONS 9 42 MEMO ...
Page 269: ...10 OBJECT DICTIONARY 10 42 MEMO ...
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