Omron CJ2 CPU UNIT SOFTWARE User Manual

6-19
6 I/O Memory Areas
CJ2 CPU Unit Software User’s Manual
6-9 DeviceNet Area
6
6-9 DeviceNet Area
The DeviceNet Area address range from CIO 3200 to CIO 3799 for words and CIO 3200.00 to CIO
3799.15 for bits.
Words in the DeviceNet Area are allocated to Slaves for DeviceNet remote I/O communications. Data is
exchanged regularly with slaves in the network (independent of the program) through the DeviceNet
Unit.
Words are allocated to slaves using fixed allocations according to fixed allocation settings 1, 2, and 3.
One of these fixed areas is selected.
The following words are allocated to the DeviceNet Unit when the remote I/O slave function is used with
fixed allocations.
Additional Information
There are two ways to allocate I/O in DeviceNet networks: Fixed allocations according to node
addresses and user-set allocations.
• With fixed allocations, words are automatically allocated to the slaves in the specified fixed
allocation area (1 to 3) according to the node addresses.
• With user-set allocations, the user can allocate words to Slaves from the following words.
CIO 0 to CIO 6143
W0 to W511
H0 to H511
D0 to D32767
E00_0 to E0C_32767, Banks: 0 to 18 hex
(You cannot specify an EM bank that is higher than C.)
For details on word allocations, refer to the DeviceNet Operation Manual (Cat. No. W267).
Area Output Area (master to slaves) Input Area (slaves to master)
Fixed Allocation Area 1 CIO 3200 to CIO 3263 CIO 3300 to CIO 3363
Fixed Allocation Area 2 CIO 3400 to CIO 3463 CIO 3500 to CIO 3563
Fixed Allocation Area 3 CIO 3600 to CIO 3663 CIO 3700 to CIO 3763
Area Output Area (master to slaves) Input Area (slaves to master)
Fixed Allocation Area 1 CIO 3370 CIO 3270
Fixed Allocation Area 2 CIO 3570 CIO 3470
Fixed Allocation Area 3 CIO 3770 CIO 3670
CPU Unit
DeviceNet
Master Unit
DeviceNet Area
DeviceNet
Slaves
With fixed allocation, words are assigned according to node
numbers. (If a Slave requires two or more words, it will occupy
as many node numbers as required to obtain enough words.)

Omron CJ2 CPU UNIT SOFTWARE Specifications

General

Brand	Omron
Model	CJ2 CPU UNIT SOFTWARE
Category	Software
Language	English