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5 Remote I/O Slave Communications
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
5-3 User-set Allocations
5
5-3-1 Setting through CX-Integrator
5-3 User-set Allocations
With a CJ-series DeviceNet Unit, you can allocate remote I/O communication slaves in any area of a
memory used for CJ-series Unit (CIO, WR, HR, DM, or EM) using one of the following methods:
• Setting through CX-Integrator
• Setting through the device variables for CJ-series Unit (Slave User-set Allocations Setup Table)
z User-set Allocations Methods
* You cannot use Holding Area H512 and its subsequent holding areas, or EM Area Bank D and its subsequent
banks.
Precautions for Correct UsePrecautions for Correct Use
Functions will vary as shown below depending on whether allocations are set through the device
variables for CJ-series Unit (Slave User Allocations Setup Table) or through the CX-Integrator.
You can only allocate two blocks (OUT 1 and IN 1) when settings are made with the device vari-
ables for CJ-series Unit, but there are three blocks (OUT 1 and IN 1/2) available with the CX-Inte-
grator.
You can allocate a maximum of three blocks at any location in I/O memory for the output (OUT) area
block 1, input (IN) area block 1, and input (IN) area block 2.
To access a slave allocated to the memory used for CJ-series Unit from the user program, user-
defined variables that specify the AT specification of the memory used for CJ-series Unit to which
the slave is allocated must be defined.
Method Set through CX-Integrator
Set through the device variables for
CJ-series Unit (Slave User Allocations
Setup Table)
Areas in memory used for CJ-
series Unit available for alloca-
tions*
CIO: CIO 0000 to CIO 6143
WR: W000 to W511
HR: H000 to H511
DM: D00000 to D32767
EM: (E€_00000 to E€_32767: € = 0 to C)
No. of allocation blocks 3 blocks: OUT 1, IN 1 and IN 2 2 blocks: OUT 1 and IN 1
Allocation size Per block 100 words max.
Total size 300 words max. for a total of 3 blocks 200 words max. for a total of 2 blocks
Connection type Automatic or user specified Automatic (connection specified by the
master)
5-3-1 Setting through CX-Integrator
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