Inner Workings Of Cp1L/Cp1E; A-3-1 Inner Structure Of Cpu Units - Omron CP1E - INTRODUCTION Introduction Manual

A-3 Inner Workings of CP1L/CP1E
This section briefly explains the inner structure, functions, and internal operation flow of CP1L and CP1E
CPU units.

A-3-1 Inner Structure of CPU Units

The inner structure of a CP1L or CP1E CPU unit is shown below.
*CP1E CPU Units do not execute these services.
(1) Transfer of programs and parameter data
• Data in RAM is automatically backed up to the built-in flash memory (CP1E:
• When the unit is powered ON, data is transferred from the built-in flash
(2) Transfer of DM defaults data
• When initiated from CX-Programmer, DM defaults are transferred from RAM
• According to PLC setup, DM defaults are transferred from the built-in flash
(3) Transfer of data between flash memory and memory cassette (Only CP1L)
• When initiated from CX-Programmer, data is transferred from RAM or the
"Write" operation from
CX-Programmer
CPU unit
Analog adjuster
External analog
settings input*
Auxiliary area
Parameters
(i.e. PLC settings)
Built-in EEPROM) when changes are made, for example, from the CX-
Programmer.
memory (CP1E: Built-in EEPROM) to RAM.
to the built-in flash memory (CP1E: Built-in EEPROM).
memory (CP1E: Built-in EEPROM) to RAM when the unit is powered ON.
built-in flash memory to the memory cassette.
A-3 Inner Workings of CP1L/CP1E
Built-in inputs
RAM
User program
Flash memory
(CP1E:Built-in EEPROM)
4 1
Access
5
I/O memory
2
DM area
1
6
Built-in outputs
SYSMAC CP1L/CP1E Introduction Manual
3
7
Memory cassette*
User program
8
Comment
3
memory
3
FB program
memory*
3
DM area
Parameters
(i.e. PLC settings)
3
A
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