Eaton EASY222-DN, User Manual, Page: 167 / 284

Read/write image data
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09/10 MN05013007Z-EN
Table 82: Byte 0 to 2 (master) or: Byte 1 to 3 slave:
Len, Type, Index
If required, refer to the more detailed description of the
marker allocation in the easy800 manual. Only a small
extract of this manual is shown at this point in order to illus-
trate the allocation principle.
Operand Len Part no. Index
Bit Marker M1 … M96 01
hex
0B
hex
01 to 60
hex
Marker Byte MB1 … MB96 01
hex
0C
hex
01 to 60
hex
Marker word MW1 … MW96 02
hex
0D
hex
01 to 60
hex
Marker double word MD1 … MD96 04
hex
0E
hex
01 to 60
hex
Attention!
The function blocks and DW markers (32-bit values) of
easy800/MFD operate with signed values.
Applies to
MD, MW,
MB, M Left = Most signifi-
cant bit, byte,
word Right = Least
significant bit,
byte, word
32 Bit MD1
16 bits MW2 MW1
8 Bit MB4 MB3 MB2 MB1
1-bit M32 to M25 M24 to M17 M16 to M9 M8 to M1
32 Bit MD2
16 bits MW4 MW3
8 Bit MB8 MB7 MB6 MB5
1-bit M64 to M57 M56 to M49 M48 to M41 M40 to M33
h The relevant marker values are transferred in Intel format.
In other words, the first byte is the low byte (Byte 4) and
the last byte the high byte.