Mitsubishi Electric MELSEC IQ-R series Reference Manual page 375

Device number (address) specification using AnA/AnUCPU common commands
By using AnA/AnU common command function, the extended file register of block number 1 to 256 can be accessed
regardless of each block number by specifying the address from device number '0' of the block number '1' as a device
number. (Access with the consecutive device number of extended file register using usable number of blocks  8192 points.)
■Device number calculation method
The calculation formula of the head device number to be specified by AnA/AnUCPU common commands is as follow:
(When specifying the device number 'm' (0 to 8191) of n block (more than 1) from the head of the block.)
Head device number = (n - 1)  8192 + m
■Range of device number that can be specified
The range of device number that can be specified are as follows.
0 to (number of available blocks  8192) - 1
A device number is not assigned to a block number which does not exist in the memory cassette. As shown below, the device
numbers are automatically assigned by skipping block numbers that do not exist in the memory cassette.
Device 0
number Area of
to
block No.1
8191
8192
Area of
to
block No.2
16383
16384
Area of
to
block No.10
24575
24576
Area of
to
block No.11
The following table shows the range of device numbers to be specified when using AnA/AnUCPU common commands for 28
blocks per each block.
Device number
0 to 8191
8192 to 16383
16384 to 24575
24576 to 32767
32768 to 40959
40960 to 49151
49152 to 57343
57344 to 65535
65536 to 73727
73728 to 81919
81920 to 90111
90112 to 98303
98304 to 106495
106496 to 114687
Block No.3 to 9 do not exist
Position of target block
First block R0 to R8191
2nd block R0 to R8191
3rd block R0 to R8191
4th block R0 to R8191
5th block R0 to R8191
6th block R0 to R8191
7th block R0 to R8191
8th block R0 to R8191
9th block R0 to R8191
10th block R0 to R8191
11th block R0 to R8191
12th block R0 to R8191
13th block R0 to R8191
14th block R0 to R8191
Device number
114688 to 122879
122880 to 131071
131072 to 139263
139264 to 147455
147456 to 155647
155648 to 163839
163840 to 172031
172032 to 180223
180224 to 188415
188416 to 196607
196608 to 204799
204800 to 212991
212992 to 221183
221184 to 229375
17 COMMUNICATING USING 1C FRAMES
17.5 Read and Write Extended File Register
Position of target block
15th block R0 to R8191
16th block R0 to R8191
17th block R0 to R8191
18th block R0 to R8191
19th block R0 to R8191
20th block R0 to R8191
21st block R0 to R8191
22nd block R0 to R8191
23rd block R0 to R8191
24th block R0 to R8191
25th block R0 to R8191
26th block R0 to R8191
27th block R0 to R8191
28th block R0 to R8191
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