Settings Through Device Variables For Cj-Series Unit (Master User-Set Allocations Setup Table) - Omron CJ1W-DRM21 Operation Manual

CX-Integrator Setting Methods
Refer to CX-Integrator Ver.2.
4-4-2 Settings through Device Variables for CJ-series Unit (Master
User-set Allocations Setup Table)
All slaves are allocated words in order of node addresses in two blocks: OUT block 1 and IN block 1.
In the block area, the first word is set with *_MstrAlocTblCfg[0 to 3]. In addition, an Allocation Size
Setup Table is created in the area and word location is specified through *_MstrAlocTblCfg[4 and 5],
and you can define the size for each block. To access the area where the slave is allocated from the
user program, a user-defined variable that specifies the AT specification of that area needs to be
defined.
Area specified in I/O memory
Bit
First word specified
to
Bit
First word specified
IN block 1
to
You can set the block allocation order and block allocation areas. Node addresses in each block are
allocated words in ascending order from 0 to 63. Node addresses that are not allocated are skipped
(not allocated words). Each address is allocated at least one word (rightmost byte, 1 word, or multi-
ple words).
• More than one word is allocated for each slave (according to it's node address) with more
than16 I/O points.
• The rightmost byte of the word is allocated to each slave that has 8 I/O points or less.
Note You can include multiple Master Units in a single CPU Unit as shown below with the use of
user-set allocations (16 Units max.).
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
@
OPERATION MANUAL (Cat. No. W464).
OUT areas
First word
specified
OUT block 1
First word specified
Master Unit
Master Unit
Slave
Slave
4 Remote I/O Master Communications
Bit
Address 0
Node addresses
in ascending order
to
to
IN areas
Bit
Address 0
Node addresses
in ascending order
to to
Addresses are in ascending order.
Not all nodes need to be allocated
and addresses for nodes with no
allocations are skipped.
Output to Slaves
Addresses are in ascending order.
Not all nodes need to be allocated
and addresses for nodes with no
allocations are skipped.
Input from Slaves
4
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