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Specifications and Configurations Section 1-2
CS/CJ-series Controller Link Unit Models
Note A network can contain both nodes with maximum of 20,000 data link words
and nodes with 12,000 data link words. When models with -V1 suffix and
those without -V1 suffix are both used in the same network, 1:N automatic
data links and configurations of 62 nodes cannot be used.
Use the CX-Net in CX-Programmer version 5.0 or higher to set a data link
area in which the number of send and receive words exceeds 12,000 words.
CX-Programmer version 3.2 or higher can be used to change data link alloca-
tions while manually set data links are active.
Up to eight CS/CJ-series Controller Link Units with unit version 1.2 or later
can be connected to a single CPU Unit. When connecting multiple Controller
Link Units to the CPU Unit, consider the current consumption of the CPU Unit
and each CPU Bus Unit before selecting the Power Supply Unit. For details on
Controller Link Unit current consumption, refer to
Controller Link Unit Models
and PLCs on page 16
. For details on current consumption of each Unit, refer
to the operation manual of the PLC that is being used.
The following table provides an example of current consumption.
Example: Using the C200HW-PA204 Power Supply Unit supplying a maxi-
mum current of 4.6 A (5 V) and maximum power of 30 W.
Item Unit Ver. 1.2 (-V1
suffix)
Pre-Ver. 1.2 (-V1
suffix)
Without -V1 suffix
Model CS1W-CLK21-V1
CJ1W-CLK21-V1
CS1W-CLK21-V1
CJ1W-CLK21-V1
CS1W-CLK21
CJ1W-CLK21
Maximum number of send/receive data link
words (data link area for sending/receiving that
is created for a single node in a single CPU Unit)
20,000 words max. 12,000 words max.
Data Link Area Area 1 and Area 2 can
be allocated in the
same area.
Area 1 and Area 2 cannot be allocated in the
same area.
Maximum number of Units connected to a single
CPU Unit
8 Units 4 Units
Automatic data link setting Select from equality layout, 1:N allocations
(common type, 1:1 type, chain type)
Equality layout only
Changing data link allocations during active data
links
Supported. (Data link tables can be changed
during active data links.)
Not supported.
Maximum number of nodes that can be con-
nected
62 Units (requires CS1W-RPT01 Repeater
Unit).
32 Units
Mixed use Supported (See note.)
Name Model Current consumption
per Unit (A)
Number of
Units
Current consumption
(A)
CPU Backplane (8 slots) CS1W-BC083 0.11 A 1 0.11 A
CPU Unit CS1H-CPU67H 0.82 A 1 0.82 A
Controller Link Unit (Optical) CS1W-CLK21-V1 0.33 A 8 2.64 A
Tot al 3.57 (power consump-
tion: 17.85 W)