Mitsubishi Electric MELSEC QS Series User Manual page 116

8
PROGRAMMING SPECIFICATIONS
The following tables show the station numbers and corresponding buffer memory
addresses. The Slave station offset, size information area is not auto-refreshed. For
checking the data, use the monitoring function of GX Developer.
Table of station numbers and corresponding buffer memory addresses
Buffer
Station Station
memory
number number
address
1 2E0 to 2E3
H H
2 2E4 to 2E7
H H
3 2E8 to 2EB
H H
4 2EC to 2EF
H H
5 2F0 to 2F3
H H
6 2F4 to 2F7
H H
7 2F8 to 2FB
H H
8 2FC to 2FF
H H
9 300 to 303
H H
10 304 to 307
H H
11 308 to 30B
H H
12 30C to 30F
H H
13 310 to 313
H H
(4) Slave station offset, size information
8
- 13 8.2 Buffer Memory
8.2.2 Buffer memory details
Buffer
Station
memory
number
address
14 314 to 317 27
H H
15 318 to 31B 28
H H
16 31C to 31F 29
H H
17 320 to 323 30
H H
18 324 to 327 31
H H
19 328 to 32B 32
H H
20 32C to 32F 33
H H
21 330 to 333 34
H H
22 334 to 337 35
H H
23 338 to 33B 36
H H
24 33C to 33F 37
H H
25 340 to 343 38
H H
26 344 to 347 39
H H
This area stores allocation data for RX/RY/RWw/RWr to each station number.
"Table8.4 Buffer Memory Address Mapping for Station Numbers and RX/RY/RWw/
RWr Offset and Size" shows the relation between buffer memory addresses and
information to be stored.
(a) Offset
The head buffer memory address of RX/RY/RWw/RWr that is allocated to each
station is stored.
If two or more stations are occupied, a value is stored only in the head buffer
address area of the station No.
(For example, if station No.1 occupies two stations, a value is stored only in the
RX/RY/RWw/RWr offset area of station No.1, and the RX/RY/RWw/RWr offset
area of station No.2 stores the head buffer memory address size of the
corresponding area.)
(b) Size
The size of RX/RY/RWw/RWr that is allocated to each station is stored in word
units.
Any size less than 1 word is rounded to 1, and 1 is stored.
For a reserved station, 0000
(For example, if station No.1 occupies two stations, a value is stored only to the
RX/RY/RWw/RWr size of station No.1, and the RX/RY/RWw/RWr size of station
No.2 stays at default value (0000
Buffer
Station
memory
number
address
348 to 34B 40 37C
H H
34C to 34F 41 380
H H
350 to 353 42 384
H H
354 to 357 43 388
H H
358 to 35B 44 38C
H H
35C to 35F 45 390
H H
360 to 363 46 394
H H
364 to 367 47 398
H H
368 to 36B 48 39C
H H
36C to 36F 49 3A0
H H
370 to 373 50 3A4
H H
374 to 377 51 3A8
H H
378 to 37B 52 3AC
H H
is stored.
H
).
H
Buffer
Station
memory memory
number
address address
to 37F 53 3B0
H H
to 383 54 3B4
H H
to 387 55 3B8
H H
to 38B 56 3BC
H H
to 38F 57 3C0
H H
to 393 58 3C4
H H
to 397 59 3C8
H H
to 39B 60 3CC
H H
to 39F 61 3D0
H H
to 3A3 62 3D4
H H
to 3A7 63 3D8
H H
to 3AB 64 3DC
H H
to 3AF
---
H H
Buffer
to 3B3
H H
to 3B7
H H
to 3BB
H H
to 3BF
H H
to 3C3
H H
to 3C7
H H
to 3CB
H H
to 3CF
H H
to 3D3
H H
to 3D7
H H
to 3DB
H H
to 3DF
H H
---