3-1
CP2E CPU Unit Software User’s Manual(W614)
3
.
This section describes the operation of the CP2E CPU Unit. Make sure that you under-
stand the contents of this section completely before writing ladder programs.
3-1 CPU Unit Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-1-1 Overview of CPU Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-1-2 CPU Unit Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-2 Backing Up Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-2-1 CPU Unit Memory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-2-2 Backing Up Ladder Programs and Parameter Area . . . . . . . . . . . . . . . . . . . . . 3-6
3-2-3 I/O Memory Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3-2-4 Initializing I/O Memory at Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
CPU Unit Operation
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