Buffer Memory; Buffer Memory List - Mitsubishi Electric MELSEC QS Series User Manual
Cc-link safety system master module
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Also See for MELSEC QS Series:
- Safety application manual (184 pages) ,
- User manual (138 pages) ,
- Safety application manual (86 pages)
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8
PROGRAMMING SPECIFICATIONS
8.2 Buffer Memory
The buffer memory is used for data transfer between the safety master module and safety
CPU module.
Data are stored in the Parameter information area and I/O data (RX, RY, RWr, RWw) are
auto-refreshed to CPU devices according to the parameter settings written to the PLC.
The following buffer memory addresses are used for monitoring or device testing in GX
Developer.
The contents of the buffer memory return to the default when the power is switched from
OFF to ON or a reset state of the safety CPU module is canceled.
8.2.1 Buffer memory list
The buffer memory list is shown in Table8.2.
Address
Hexadecimal
Decimal
0
0
H
Parameter information
to
to
area
DF
223
H
E0
224
H
to
to
Remote input (RX)
15F
351
H
160
352
H
to
to
Remote output (RY)
1DF
479
H
1E0
480
H
Remote register
to
to
(RWw)
2DF
735
H
2E0
736
H
to
to
Remote register (RWr) Stores the receive data from remote device stations.
3DF
991
H
3E0
992
H
Slave station offset,
to
to
size information
5DF
1503
H
5E0
1504
H
to
to
Link special relay (SB) Stores the data link status.
5FF
1535
H
600
1536
H
Link special register
to
to
(SW)
7FF
2047
H
800
2048
H
to
to
Use prohibited
7FFF
32767
H
8
- 5
8.2 Buffer Memory
8.2.1 Buffer memory list
Table8.2 Buffer Memory List
Item
Stores the parameter settings.
Stores the status of inputs from safety remote I/O
stations, standard remote I/O stations and remote
device stations.
Stores the status of outputs to safety remote I/O
stations, standard remote I/O stations and remote
device stations.
Stores the send data to remote device stations.
Stores the offset and size of RX/RY/RWw/RWr for
each remote station.
Stores the data link status.
Description
---
Reference
Read/Write
section
Section
Read only
8.2.2 (1)
Read only
Section
8.2.2 (2)
Write only
Write only
Section
8.2.2 (3)
Read only
Section
Read only
8.2.2 (4)
Read/write
Section
8.2.2 (5)
enabled (write
may be disabled
depending on
Section
the device)
8.2.2 (6)
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