Omron CJ1W-DRM21, CS1W-DRM21 operation manual Section

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.

CPU Unit

Specified in allo- cated DM words

OUT block 1

IN block 1

Ascending order starting from address 0

Address

To Slaves

Address

Ascending order starting from address 0 Address

From Slaves

Address

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.

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	Any address order
	To Slaves
Address
Address	Any address order
	To Slaves
Address
Address	Any address order
Address	From Slaves
Address	Any address order
	From Slaves
Address

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.

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