Mitsubishi Electric Melsec Q Series User Manual page 128

4
FUNCTIONS
(2) Invalidating or validating data swap setting
4
- 19 4.4 Data Swap Function
For DP-Slaves that handle data whose word structure is the same as that of the
QJ71PB92V, invalidate the data swap setting.
QJ71PB92V
Data 1 Data 1
(H) (L)
Input data
Data 2 Data 2
area
(H) (L)
Data 3 Data 3
(H) (L)
Output
Data 4 Data 4
data area
(H) (L)
Figure 4.17 When Invalidating the Data Swap Setting
For DP-Slaves that handle data whose word structure is the reverse of the
QJ71PB92V, validate the data swap setting.
QJ71PB92V
Data 1 Data 1
(H) (L)
Input data
Data 2 Data 2
area
(H) (L)
Data 3 Data 3
(H) (L)
Output
Data 4 Data 4
data area
(H) (L)
Figure 4.18 When Validating the Data Swap Setting
Input data
Data 1 Data 1 Data 1
(H) (L)
Data 2 Data 2 Data 2
(H) (L)
Output data
Data 3 Data 3 Data 3
(H) (L)
Data 4 Data 4 Data 4
(H) (L)
I/O data exchange
H : High byte
Input data
Data 1 Data 1
(L) (H)
Data 2 Data 2
(L) (H)
Output data
Data 3 Data 3
(L) (H)
Data 4 Data 4
(L) (H)
I/O data exchange
DP-Slave
Input area
Data 1
(H) (L)
Data 2
(H) (L)
Output area
Data 3
(H) (L)
Data 4
(H) (L)
L : Low byte
DP-Slave
Input area
Data 1 Data 1
(L) (H)
Data 2 Data 2
(L) (H)
Output area
Data 3 Data 3
(L) (H)
Data 4 Data 4
(L) (H)
H : High byte L : Low byte