Specifications; Devicenet Unit - Omron CJ1W-DRM21 Operation Manual

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Specifications

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DeviceNet Unit

General Specifications
General specifications of the CJ-series DeviceNet Unit conform to those of the NJ-series CPU Units.
Functional and Performance Specifications
Item
DeviceNet Unit model
Applicable Controller
Unit classification
Applicable unit numbers
Mounting position
No. of Fixed allocations
Masters
that you
User-set allocations
can
mount
No. of Fixed allocations
Slaves
that you
User-set allocations
can
mount
No. of Units that you can connect per network
Words DeviceNet When
allo- remote I/O used as
cated in communi- a Mas-
the cations ter
memory
When
used for
used as
CJ-
a Slave
series
Unit
I/O port (without power OFF retention)
(Access via the device variables for CJ-
series Unit)
I/O port (with power OFF retention)
(Access via the device variables for CJ-
series Unit)
Other I/O memory (Using the user-
defined variable for R/W to the allocation
area)
Supported connections (communications)
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
CJ1W-DRM21
NJ Series
CPU Bus Unit
0 to F
CPU Rack or Expansion Rack
3 Units max. (You must allocate unique words with the use of device variables for
CJ-series Unit (for software switch).)
By CX-Integrator 16 Units max. (You must allocate unique words with the use of CX-Integrator.)
By device vari- 16 Units max. (You must allocate unique words with the use of device variables
ables for CJ- for CJ-series Unit (user setup tables).)
series Unit
3 Units max. (You must allocate unique words with the use of device variables for
CJ-series Unit (Software Switches).)
By CX-Integrator 16 Units max. (You must allocate unique words with the use of CX-Integrator.)
By device vari- 16 Units max. (You must allocate unique words with the use of device variables
ables for CJ- for CJ-series Unit (user setup tables).)
series Unit
64 Units max.
Fixed allocations Fixed words in the CJ-series DeviceNet Area in the CIO Area (one of three set-
tings).
User-set alloca- Any I/O memory (Set with the use of the device variables for CJ-series Unit or
tions CX-Integrator.)
Fixed allocations Fixed words in the CJ-series DeviceNet Area in the CIO Area (one of three set-
tings).
User-set alloca- Any I/O memory (Set with device variables for CJ-series Unit or CX-Integrator.)
tions
25 words/Unit
CPU Unit to DeviceNet Unit: 9 words for the software switches, etc., 6 words for
the status area, 8 words for the registered slaves and normal slaves tables
100 words/Unit
Scan List User Setup Table, Slave User-set Allocations Setup Table, Master I/O
Allocations Reference Table, Slave I/O Allocations Reference Table, Detailed
Slave Status Table, etc.
CPU Unit to DeviceNet Unit: Table for communications cycle time settings
Set the allocation size table for all slaves in any area when remote I/O communica-
tions is set to user-set allocations according to the setting in the device variables
for CJ-series Unit.
• Remote I/O communications (master and slave): Master/slave connection (poll,
bit-strobe, COS, cyclic)
• Explicit message communications: Explicit connection
All conform to DeviceNet communications standards.
1 Features and System Configuration
Specification
1
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