Mitsubishi Electric Melsec Q Series User Manual page 67

3
SPECIFICATIONS
(2) Output data area (for mode 3) (Un\G14336 to Un\G18431)
When the operation mode is Communication mode (mode 3), output data to DP-
Slaves are set.
(a) Data length setting
(b) Data length range
Address
DEC (HEX)
14336(3800 )
H
Output data of 1st module
to
14348(380C )
H
14349(380D )
H
Output data of 2nd module
to
14352(3810 )
H
to
Output data of n-th module
18431(47FF )
H
Figure 3.10 Example of Output Data Assignment (1st module: 23 bytes, 2nd module: 7 bytes)
POINT
1st module
2nd module
3rd module
4th module
5th module
The data length (unit: byte) for each station is variable and assigned based on the
slave parameter ("Slave Modules" window) set using GX Configurator-DP.
For the DP-Slave that has a fixed data length, the slave parameter setting will be
ignored.
The maximum data length per module is 244 bytes, and the total data length for all
DP-Slaves can be set up to 8192 bytes.
When the data length is an odd number of bytes, the final high byte is occupied.
Set 00 to the final high byte.
H
The output data of the next station is assigned starting from the next buffer address.
14336(3800
14337(3801
(Output data length:
23 bytes)
14347(380B
(Output data length:
14348(380C
7 bytes)
14349(380D
14350(380E
14351(380F
14352(3810
If a DP-Slave with no output data is assigned, its space in the output data area is
taken over by the next station with output data, as shown below.
Each DP-Slave setting
Output data : Set
Output data : None
Output data : Set
Output data : Set (Data length: 0)
Output data : Set
3.4 Buffer Memory
3.4.4 I/O data exchange area
b15 b8 b7
) 2nd byte of 1st module 1st byte of 1st module
H
)
H
4th byte of 1st module 3rd byte of 1st module
)
22nd byte of 1st module 21st byte of 1st module
H
)
00
23rd byte of 1st module
H H
) 2nd byte of 2nd module 1st byte of 2nd module
H
) 3rd byte of 2nd module
4th byte of 2nd module
H
5th byte of 2nd module
) 6th byte of 2nd module
H
)
H 00 7th byte of 2nd module
H
Assignment result in Output data area of QJ71PB92V
14336(3800 )
H
Output data of 1st module
Output data of 3rd module
Output data of 5th module
Because of no output data setting for 2nd
and 4th modules, no area is assigned for them
1
2
3
b0
4
5
6
7
8
3
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