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Master Remote I/O Communications Section 4-1
The OUT and IN blocks will be allocated in order of slave node addresses.
Each block is a maximum of 500 words.
Each address is allocated at least one byte (rightmost).
• More than one word is allocated for each slave with more than16 I/O
points (according to its node address).
• The rightmost byte of the word is allocated to each slave that has less
than 16 I/O points.
Using the Configurator When using the Configurator, each slave can be allocated four blocks: Output
(OUT) blocks 1 and 2 and input blocks 1 and 2. Each block is a maximum of
500 words.
Any order can be used for block allocations and for slave allocations within
each block. Each address is allocated at least one byte (rightmost).
• More than one word is allocated for each slave with more than16 I/O
points (using it’s node address).
• The leftmost or rightmost byte of the word is allocated to each slave that
has less than 16 I/O points.
CPU Unit
Specified in allo-
cated DM words
OUT
block 1
IN
block 1
Address
Address
Ascending order starting from address 0
To Slaves
From Slaves
Ascending order starting from address 0
Address
Address
CPU Unit
Output area
OUT
block 1
OUT
block 2
Input area
IN
block 1
IN
block 2
The position of each block can be set. An or-
der (such as IN block 1, OUT block 2, IN block
2 and OUT block 1) can also be used.
Address
Address
Any address order
To Slaves
From Slaves
Address
Address
Address
Address
Address
Address
Any address order
Any address order
Any address order
From Slaves
To Slaves