Mitsubishi Electronics A1SJ71AR23Q ユーザーズマニュアル
APPENDICES
Appendix 2 List of Special Registers (for Link)
App
- 3
A
PPE
NDICES
INDE
X
Appendix 2 List of Special Registers (for Link)
Data link information is stored as numeric values into the special registers (for link).
The special registers (for link) are used in the sequence program, and error locations and
causes can be checked by monitoring them.
The special registers (for link) are used in the sequence program, and error locations and
causes can be checked by monitoring them.
The following table lists the special registers (for link) available for Q series local stations.
For those used in master and A/QnA series local stations, refer to the following manual.
For those used in master and A/QnA series local stations, refer to the following manual.
Type MELSECNET, MELSECNET/B Data Link System Reference Manual
Table App.2 List of special registers (for link)
Buffer
memory
address
(Bit No.)
address
(Bit No.)
No.
Name
Description
Details
Hexad
ecimal
Decim
al
13B
H
315
D9243
Host station No.
information
information
Stores station No.
(0 to 64)
(0 to 64)
•Stores station No. of the host station.
•Useful for local station to check station No. of the host station.
•Useful for local station to check station No. of the host station.
13C
H
316
D9244
Total number of
slave stations
slave stations
Stores the number of
slave stations.
slave stations.
•Used for local stations to detect the number of slave stations in
the loop.
13D
H
317
D9245
Receive error
detection count
detection count
Stores the accumulated
total of receive errors.
total of receive errors.
•Stores the accumulated counts of CRC, OVER, and ABIF
detections.
•Detected errors are counted up to "FFFF
H
" and then counting is
stopped.
•Resetting the CPU module clears the count to "0".
140
H
320
D9248
Local station
operating status
operating status
Stores status data of
station No.1 to No.16
station No.1 to No.16
•Stores station Nos. of STOP- or PAUSE-status local stations
except for the host station, into the corresponding bits in the
special registers (for link) as shown below.
special registers (for link) as shown below.
•If a local station other than the host station goes down, data
before the failure will be held.
When the corresponding bit in D9252 to D9255 is "0", the
relevant bit in the above special registers is enabled.
When the corresponding bit in D9252 to D9255 is "0", the
relevant bit in the above special registers is enabled.
•If the host station goes down, data before the failure will be also
held.
•Bits corresponding to the station Nos. of STOP or PAUSE status
local stations (except for host station) turn to "1".
(Example) When local stations No.7 and No.15 are in STOP or
PAUSE, bit 6 and bit 14 in D9248 are "1". By monitoring D9248,
"16448 (4040
(Example) When local stations No.7 and No.15 are in STOP or
PAUSE, bit 6 and bit 14 in D9248 are "1". By monitoring D9248,
"16448 (4040
H
)" is identified.
•When the status of a local station except for the host station
changes to RUN or STEP RUN, the corresponding bit
automatically turns to "0".
automatically turns to "0".
•Bits corresponding to the host and remote I/O stations always
store "0".
141
H
321
D9249
Stores status data of
station No.17 to No.32
station No.17 to No.32
142
H
322
D9250
*1
Stores status data of
station No.33 to No.48
station No.33 to No.48
143
H
323
D9251
*1
Stores status data of
station No.49 to No.64
station No.49 to No.64
D9248
b15
b15 b14
b14 b13
b13 b12
b12 b11
b11 b10
b10 b9
b9 b8
b8 b7
b7 b6
b6 b5
b5 b4
b4 b3
b3 b2
b2 b1
b1 b0
b0
L16 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1
Device
Device
No.
No.
No.
D9249 L32 L31 L30 L29 L28 L27 L26 L25 L24 L23 L22 L21 L20 L19 L18 L17
D9250 L48 L47 L46 L45 L44 L43 L42 L41 L40 L39 L38 L37 L36 L35 L34 L33
D9251 L64 L63 L62 L61 L60 L59 L58 L57 L56 L55 L54 L53 L52 L51 L50 L49
Bit No.
Bit No.