Buffer Memory List; Buffer Memory/Configuration - Mitsubishi Electric QJ71PB93D User Manual

3 SPECIFICATIONS

3.4 Buffer Memory List

3.4.1 Buffer memory/configuration

Buffer memory address
Hexadecimal decimal
0 0
H
Output receive area
BF 191
H
C0 192
H
System area (Use prohibited)
FF 255
H
100 256
H
Input send area
1BF 447
H
1C0 448
H
System area (Use prohibited)
1FF 511
H
200 512 Operation baud rate
H
201 513 Operation station number
H
202 514 Station number set on flash ROM
H
203 515 Station number change request area
H
204 516 Station number rewritable count to flash ROM
H
205 517
H
System area (Use prohibited)
7F7 2039
H
7F8 2040 Module error information
H
7F9 2041
H
Extension trouble information area
805 2053
H
806 2054
H
System area (Use prohibited)
8CD 2253
H
8CE 2254 Current operation mode
H
8CF 2255 Operation mode change request area
H
8D0 2256 Operation mode change result
H
8D1 2257 Current communication watchdog timer value
H
8D2 2258 Self-diagnostic status type code display area
H
8D3 2259 Swapping function setting status
H
8D4 2260
H
System area (Use prohibited)
8DF 2271
H
8E0 2272
H
Output receive area used status
8EB 2283
H
8EC 2284
H
System area (Use prohibited)
8EF 2287
H
8F0 2288
H
Input send area used status
8FB 2299
H
8FC 2300
H
System area (Use prohibited)
AFF 2815
H
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The configuration of the buffer memory used to receive and send data with the
QJ71PB93D and the CPU module is described below.
Area name
POINT
Do not write any data in the "system area (Use prohibited)" of the buffer memory.
If data is written to the "system area (Use prohibited)", there is a risk that the
programmable controller system may malfunction.
Description
Stores the output data received from the master station.
(Max. usable range 122 words)
Used to set the input data to be sent to the master station.
(Max. usable range 122 words)
Stores the baud rate in current operation.
Stores the station number in current operation.
Stores the station number saved on the flash ROM.
Used to set a new station number to be set in response to the station
number change request signal (Y13).
Stores the remaining number of times when the station number can be
saved onto the flash ROM during continuous operation.
Stores the error code detected by the QJ71PB93D.
Used to set the extension trouble notification data to the master
station.
Stores the operation mode in current operation.
Used to set a new operation mode to be set in response to the
operation mode change request signal (Y11).
Stores the result of changing the operation mode in response to the
operation mode change request signal (Y11).
Stores the communication watchdog timer value in current operation.
Stores the diagnostic status type code at the time of self-diagnostics.
Stores the setting status of the swapping function in current operation.
Stores the current used status of the output receive area.
Stores the current used status of the input send area.
MELSEC-Q
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