Hitachi PLC User Manual

3
Basic flow
Download from PC to CPU
The program is stored in
FLASH memory of CPU
Start the PLC by PC or
RUN switch on the PLC
PLC starts operation according to the user program.
RUN
Program
CPU module
PLC
CPU module
FLASH memory
Program
Program memory (SRAM)
Data memory (SRAM)
Retentive Data memory
(SRAM)
Micro processor
FLASH memory keeps the
program after power OFF.
CPU module
FLASH memory
Program memory (SRAM)
Data memory (SRAM)
Retentive Data memory
(SRAM)
Micro processor
Input
Output
ç ç ç
è è è
Programming on PC
Programming software
required (see page 1)

Hitachi PLC Specifications

General

Brand	Hitachi
Model	PLC
Category	Controller
Language	English