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3 SPECIFICATIONS
3.4 Buffer Memory
3.4.1 Buffer memory list
Address
Hex.
Dec.
0000
to
H
0 to 271
010F
H
0110
to
H
272 to 287
011F
H
0120
to
H
288 to 303
012F
H
0130
to
H
304 to 423
01A7
H
01A8
to
H
424 to 431
01AF
H
01B0
432
H
01B1
433
H
01B2
434
H
01B3
435
H
01B4
to
H
436 to 439
01B7
H
01B8
to
H
440 to 443
01BB
H
01BC
to
H
444 to 447
01BF
H
01C0
to
H
448 to 451
01C3
H
01C4
to
H
452 to 455
01C7
H
01C8
to
H
456 to 459
01CB
H
01CC
to
H
460 to 463
01CF
H
01D0
to
H
464 to 467
01D3
H
01D4
to
H
468 to 975
03CF
H
03D0
to
H
976 to 1007
03EF
H
03F0
1008
H
03F1
to
H
1009 to 1279 Use prohibited
04FF
H
0500
to
H
1280 to 1531
05FB
H
3 - 17
This section explains the buffer memory of the QJ71DN91.
The buffer memory list is shown in Table 3.6.
Table 3.6 Buffer memory list (1/3)
Item
Use prohibited
Message Communication
A command for message
Command
communication is set.
Message Communication
Stores result data of message
Result
communication.
Message Communication
Stores transmit and receive data of
Data
message communication.
Use prohibited
Master Function
Stores the communication status of
Communication Status
the master function.
Error Information for
Stores a communication error code of
Master Function
the error occurred.
Stores an illegal frame count of the
Bus Error Counter
CAN chip (communication chip for
DeviceNet) when it exceeds 96.
Stores the number of times the
Bus Off Counter
QJ71DN91 was placed in the bus off
status.
Stores parameter setting status of
Node Configuration Status
each slave node.
Use prohibited
Node Communication
Stores I/O communication status of
Status
each slave node.
Node Communication
Stores I/O communication error status
Error Status
of each slave node.
Stores communication fault status of
Node Fault Status
each slave node.
Use prohibited
Failed Node Detection
Whether or not to detect any failed
Setting
node is set.
Use prohibited
Parameters for Master
Parameters for master function are
Function *2
set.
Use prohibited
Auto Configuration
Operation of auto configuration is set.
Operation Setting
Stores the start addresses and sizes
(in word units) of Master Function
I/O Address Area for
Receive Data (address: 0700
Master Function
07FF
Data (address: 0900
slave nodes.
Description
—
—
—
—
—
—
—
to
H
) and Master Function Transmit
H
to 09FF
) for
H
H
MELSEC-Q
Availability
Read/Write *1
Master
Slave
function
function
—
—
—
R/W
—
—
R/W
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
R/W
—
—
—
R/W
—
—
—
R/W
—
—
—
Reference
section
—
—
R
3.4.2
—
—
R
R
3.4.3
R
R
R
3.4.4
—
—
R
R
3.4.4
R
—
—
3.4.4
—
—
3.4.5
—
—
3.4.5
—
—
R
3.4.6
3 - 17
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