A-87
Appendices
NJ-series CPU Unit Software User’s Manual (W501)
A-6 Contents of Memory Used for CJ-series Units
App
A-6-2 Internal I/O Area
Addresses
Words in this area are allocated to slaves for fixed allocations according to fixed allocation setting 1,
2, or 3 in the software switches in the CIO Area. Select one of these fixed areas.
You can allocate memory in the DeviceNet Area even if you use fixed allocations to use the remote
I/O slave function of a DeviceNet Unit.
Refer to the CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit (Cat. No. W497)
for details.
Description
You use the bits in these areas only in programming. You cannot use them to input or output data
through external I/O terminals. If you need work bits, you should normally use bits in this area. Data
in this area is cleared when power is cycled or when the operating mode is changed between PRO-
GRAM and RUN mode.
Addresses
Description
You use the bits in these areas only in programming. You cannot use them to input or output data
through external I/O terminals. If you need work bits, you should normally use bits in this area. Data
in this area is cleared when power is cycled or when the operating mode is changed between PRO-
GRAM and RUN mode.
Addresses Word addresses Bit addresses
Range CIO 3200 to CIO 3799 CIO 3200.00 to CIO 3799.15
Addresses
Master to slave out-
put area
Slave to master input area
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
Addresses
Master to slave out-
put area
Slave to master input area
Fixed allocation area 1 CIO 3370 CIO 3270
Fixed allocation area 2 CIO 3570 CIO 3470
Fixed allocation area 3 CIO 3770 CIO 3670
CIO Area Work Areas
Addresses Word addresses Bit addresses
Range
CIO 1300 to CIO 1499 and
CIO 3800 to CIO 6143
CIO 1300.00 to CIO 1499.15 and
CIO 3800.00 to CIO 6143.15
A-6-2 Internal I/O Area
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