Omron NSJ CONTROLLERS - 03-2008 Operation Manual page 145

I/O Memory
DeviceNet Area
Initialization
1,2,3...
114
The following words are allocated to the DeviceNet Section when the remote
I/O slave is used with fixed allocations.
Area
Fixed Allocation Area 1
Fixed Allocation Area 2
Fixed Allocation Area 3
Data is exchanged regularly to slaves in the network (independent of the pro-
gram) through the built-in DeviceNet Section.
Bits in the DeviceNet Area can be force-set and force-reset.
Note There are two ways to allocated 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, 2, or 3) according to the node
addresses.
• With user-set allocations, the user can allocate words to slaves from the
following words.
CIO 0000 to CIO 0235, CIO 0300 to CIO 0511, CIO 1000 to CIO 1063
W000 to W511
H000 to H511
D00000 to D32767
E00000 to E32767, banks 0 to 2
Not supported by the NSJ-@-@@@@-M3D.
For details on word allocations, refer to the CS/CJ Series DeviceNet Opera-
tion Manual (W267).
NSJ Controller
DeviceNet
slaves
The contents of the DeviceNet Area will be cleared in the following cases:
1. The operating mode is changed from PROGRAM to RUN or MONITOR
mode or vice-versa.
2. The NSJ Controller's power supply is cycled.
3. The DeviceNet Area is cleared from a Programming Device (i.e., the CX-
Programmer).
Output Area
(master to slaves)
CIO 3370
CIO 3570
CIO 3770
DeviceNet Area
Built-in DeviceNet
Section
With fixed allocation, words are assigned according to node
numbers. (If a slave requires two or more words, it will be
allocated as many node numbers as words required.)
Section 6-3
Input Area
(slaves to master)
CIO 3270
CIO 3470
CIO 3670