List Of Buffer Memory Addresses - Mitsubishi Electric MELSEC-Q Series User Manual

3.5

List of Buffer Memory Addresses

Buffer memory is for data communications between the master module and the CPU module.
When the CPU module is reset or the system is powered off and on, the data in the buffer memory are set back to the
default (initial values).
The following table lists the buffer memory addresses for the master module.
For details on the buffer memory, refer to Page 104, Appendix 2.
Buffer memory address
Decimal Hexadecimal
0 to F
0 to 15
H
10 to FFF
16 to 4095
H
1000
4096 to 4111
H
1010
4112 to 8191
H
2000
8192
H
2001
8193 to 8320
H
2081
8321 to 8959
H
2300
8960
H
2301
8961 to 9215
H
2400
9216
H
2401
9217 to 9344
H
2481
9345 to 9983
H
2700
9984
H
2701
9985 to 10112
H
2781
10113 to 10255
H
2810
10256
H
2811
10257
H
2812
10258 to 10319
H
2850
10320
H
2851
10321
H
2852
10322 to 10495
H
2900
10496 to 10751
H
2A00
10752 to 11007
H
2B00
11008 to 11263
H
2C00
11264 to 12287
H
3000
12288 to 18431
H
4800
18432 to 32767
H
If data are written in the system reserved area, it may cause malfunction of the programmable controller system.
34
H
H
to 100F
H
to 1FFF
H
to 2080
H
to 22FF
H
to 23FF
H
Number of the IDs of the connected modules
to 2480
Connected module ID information storage area
H
to 26FF
H
to 2780
H
to 280F
H
to 284F
H
Parameter access target module ID specification
to 28FF
H
to 29FF
Parameter storage location memory number (output)
H
to 2AFF
H
to 2BFF
Parameter storage location memory number (input)
H
to 2FFF
H
to 47FF
H
to 7FFF
H
Item
Input information area
System reserved
Output information area
System reserved
Number of the error IDs
Error ID information storage area
System reserved
Number of the connected modules
System reserved
System reserved
Number of the alarm IDs
Alarm ID information storage area
System reserved
Latest error code storage area
Latest error ID storage area
System reserved
Parameter access setting
System reserved
System reserved
System reserved
Parameter storage area
System reserved
Allowable
operation
(Read/write)
Read only

Read and write

Read only
Read only

Read only

Read only
Read only

Read only
Read only

Read only
Read only

Read and write
Read and write

Read only

Read only

Read and write
