7 MEMORY CONFIGURATION AND DATA PROCESS

7.1Configuration and roles of QD75 memory 7.1.1 Configuration and roles of QD75 memory

MELSEC-Q

The QD75 is configured of the following two memories.

Area configuration

Memory

Role

configuration

 

Area that can be directly accessed

Buffer memory with sequence program from PLC CPU.

Area for backing up data required Flash ROM for positioning.

Parameter area

Monitor data area

Control data area

Positioning data area (No. 1 to 600)

Block start data area (No.7000 to 7004)

PLC CPU memo area

Backup

 

 

 

 

 

 

Not

 

 

 

 

 

 

pos-

 

 

 

 

 

 

sible

 

 

 

Pos-

 

 

 

sible

 

 

 

 

 

 

 

 

 

 

 

 

 

: Setting and storage area provided, Not possible: Data is lost when power is turned OFF

– : Setting and storage area not provided, Possible: Data is held even when power is turned OFF

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Mitsubishi Electronics QD75P, QD75D user manual QD75 is configured of the following two memories, Area configuration Memory