Table of Contents
Advertisement
3 SPECIFICATIONS
3.4 Buffer Memory List
3.4.1 Buffer memory/configuration
Buffer memory address
decimal (Hexadecimal)
0
(0
)
Input area
H
959
(3BF
)
H
960
(3C0
)
Output area
H
1919
(77F
)
H
1920
(780
)
Address information area
H
2039
(7F7
)
H
2040
(7F8
)
Communication trouble area
H
2079
(81F
)
H
2080
(820
)
Slave error information cancel area
H
2081
(821
)
Global control area
H
2082
(822
)
Not usable
H
2083
(823
)
Time out time setting area (Closed to users
H
because this is a debugging function.)
2084
(824
)
Trouble no information time setting area
H
2085
(825
)
Not usable
H
2095
(82F
)
H
2096
(830
)
Expansion communication trouble area
H
2110
(83E
)
H
2111
(83F
)
Not usable
H
2112
(840
)
Slave status area
H
2116
(844
)
H
2117
(845
)
Not usable
H
2127
(84F
)
H
2128
(850
)
Input/Output start address area (Extended
H
service mode only)
2247
(8C7
)
H
2248
(8C8
)
Not usable
H
2253
(8CD
)
H
2254
(8CE
)
Current operation mode area
H
2255
(8CF
)
Operation mode change request area
H
2256
(8D0
)
Operation mode change result area
H
2557
(8D1
)
Local station address display area
H
2558
(8D2
)
Self-diagnosis status code area
H
2259
(8D3
)
H
Not usable
3775
(EBF
)
H
3 - 14
The configuration of the buffer memory used to receive and send data with the
QJ71PB92D and the PLC CPU is described below.
Area name
POINT
Don't read and write to the buffer memory which is not usable.
If you perform it, it cannot guarantee as the QJ71PB92D function.
This is the area that stores the input data from the slave.
This is the area that stores the output data to the slave.
This is the area that shows the slave address and I/O data length.
This is the area that shows the trouble information that occurred during
communication.
This is the area that sets the data that masks the slave trouble information.
This is the global control function hold/cancel selection area.
This is used to set the time out time when an exchange start/stop is executed.
This is used to set the time that does not inform the communication trouble
after the exchange start.
This area shows the expansion information of the trouble information which is
occurred during the communication.
This is the area that shows the status information of each slave.
This is the area that shows the addresses to start the input area and output
area of each slave.
This area indicates the operation mode of the QJ71PB92D when it has started
up.
In this area, set the operation mode of the QJ71PB92D which you want to
choose.
This area indicates the execution result of the operation mode change
request.
Area in which the station address of the local station is stored.
Area in which the code indicating the status of the self-diagnosis during the
execution of the diagnosis is stored.
MELSEC-Q
Description
3 - 14
Advertisement
Table of Contents
