Communications specifications
42
3 E
therC
Example of PDO mapping
This section introduces an example of PDO mapping. Data of 2 bytes and 4 bytes are little-endian.
With the Sync manager 2 and Sync manager 3 PDO assignment objects, set the mapping of PDO communication by
selecting the PDO mapping object that performs communication actually.
PDO mapping object
EtherCAT communication frame
EtherCAT datagram
RxPDO frame of driver
PDO
RxPDO1
Index
1600h
Sub
00h
Mapping
9
A
Object
B
C
D
E
H
G
F
I
TxPDO frame of driver
RxPDO
data
TxPDO
data
L
Object
M
N
O
P
Data length
–
04h
Object D
1 byte
05h
Object E
4 byte
06h
Object F
1 byte
07h
Object G
2 byte
08h
Object H
1 byte
09h
Object I
1 byte
0Ah to 10h
0
–
RxPDO2
1601h
00h
0
–
01h to 10h
0
–
01h
Object A
4 byte
02h
Object B
2 byte
03h
Object C
4 byte
SM3 PDO assignment object
Index
1C13h
Sub
00h
Setting
value
1
01h
1A00h
SM2 PDO assignment object
Index
1C12h
Sub
00h
Setting
value
1
01h
1600h
TxPDO mapping object
PDO
TxPDO1
Index
1A00h
Sub
00h
Mapping
5
Data length
–
04h
Object O
1 byte
05h
Object P
4 byte
06h to 10h
0
–
TxPDO2
1A01h
00h
0
–
01h to 10h
0
–
01h
Object L
2 byte
02h
Object M
2 byte
03h
Object N
4 byte
Содержание aSTEP AZ mini Driver
Страница 14: ...14 1 Introduction...
Страница 128: ...128 3 EtherCAT communication...
Страница 146: ...146 4 Object list...
Страница 164: ...164 5 Troubleshooting...
Страница 170: ...170 6 Reference materials...
Страница 171: ...171 6 Reference materials...