Eaton easyE4 series Manual page 168

5. Programming on the device
5.7 Organizing marker ranges
164
Byte in memory Bit access
B
9 72...65
10 80...73
....
63 494...487
64 512...495
65 ------------
66 ------------
....
509 ------------
510 ------------
511 ------------
512 ------------
513 ------------
514 ------------
515 ------------
516 ------------
....
1021 ------------
1022 ------------
1023 ------------
1024 ------------
The first column shows the available memory in bytes.
The columns that follow show the various available access options (bit, byte, word, and
double word).
The first 64 bytes can be accessed with all four access options.
Within this context, M41 is the least significant bit of byte 4, the least significant bit of
MB5, the least significant bit of MW3, and the least significant bit of MD2.
Bit access ends at MB 64. After that point, access is only possible with bytes, words,
and double words.
Byte access ends at MB 512. After that point, access is only possible with words and
double words.
easyE4 11/18 MN050009 EN www.eaton.com
Byte access Word access
MB MW
9 5
10
63 32
64
65 33
66
509 255
510
511 256
512
-------------- 257
--------------
-------------- 258
--------------
-------------- 511
--------------
-------------- 512
--------------
Double word access
MD
3
17
128
129
256