8-5
8 I/O Allocations and Unit Settings
CJ2 CPU Unit Software User’s Manual
8-1 I/O Allocations
8
8-1-2 Automatic Allocation
Use this method to allocate I/O according to the status of the connected Units. I/O are allocated auto-
matically, so operations from a Programming Device is not required.
When automatic allocation is used, the I/O allocations will be updated every time the power supply to
the PLC is turned ON.
To change from manual allocation to automatic allocation, delete the I/O tables using a Programming
Device.
Additional information
Unlike with manual allocation, I/O tables are not created with automatic allocation, and so the
connected Units are not verified.
With automatic allocations, I/O will be allocated for the connected Units as described in the following
table. No user operation is required.
8-1-2 Automatic Allocation
Automatic Allocation (Default)
Allocation Method
Unit classification Allocation method
Basic I/O Units Allocated in order according to location.
Special I/O Units Allocated according to front-panel rotary switch settings (i.e., unit
numbers).
CPU Bus Units
The I/O are allocated to the Units
connected when the power supply is turned ON.
Power turned ON
To Next Page
Loading...
Need help?
General