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MELSEC-Q
3 SPECIFICATIONS
(4) Example address information area, INPUT area, and OUTPUT
area
The QJ71PB92D reads the slave station address and I/O byte length set by the
parameter file which is set by the GX Configrator-DP and stores these in the
buffer memory address information area.
With the QJ71PB92D, I/O areas are assigned to each slave station based on the
I/O byte length information in the address information area, and each I/O data will
be stored in the corresponding buffer memory area (MODE E).
Example : At extended service mode
Address information area
1920(780
H
)
1921(781
H
)
1922(782
H
)
1923(783
H
)
5
: Vacant area
CPU module
QJ71PB92D
Slave
Slave
PROFIBUS-DP
network
Station address : 10
Input data length : 7 byte
Output data length : 5 byte
963(3C3
H
)
1st station 2nd input byte
INPUT/OUTPUT area
0(0
H
)
1(1
H
)
2(2
H
)
959(3BF
H
)
960(3C0
H
)
961(3C1
H
)
1919(77F
H
)
IN
P
U
T
OU
T
P
U
T
1st station1st input byte
3(3
H
)
4(4
H
)
5(5
H
)
6(6
H
)
1st station 3rd input byte
2nd station 2nd input byte 2nd station 1st input byte
2nd station 4th input byte
2nd station 6th input byte
2nd station 3rd input byte
2nd station 5th input byte
2nd station 7th input byte
2nd station 2nd output byte 2nd station 1st output byte
2nd station 4th output byte 2nd station 3rd output byte
2nd station 5th output byte
b15
b0
b15
b0
0
3
10
5
7
962(3C2
H
)
4
Station address : 5
Input data length : 3 byte
Output data length : 0 byte
1 Station address (FFFF
H
if not assigned)
2 Input byte length (FF
H
if not assigned)
3 Output byte length (FF
H
if not assigned)
1, 2 and 3 are also set in a reserved station.
(The free areas in the INPUT area
are initialized with [00
H
].)
4 Since output from the first station has a byte length of 0,
no area is allocated in the OUTPUT area.
Buffer memory
address demical
(Hexadecimal)
Buffer memory
address demical
(Hexadecimal)
2
1
3
