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2 data transmission process, Qd75, Melsec-q – MITSUBISHI ELECTRIC Mitsubishi Programmable Logic Controller QD75D User Manual

Page 270

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7 - 6

MELSEC-Q

7 MEMORY CONFIGURATION AND DATA PROCESS

7.2 Data transmission process

The data is transmitted between the QD75 memories with steps (1) to (8) shown

below.

The data transmission patterns numbered (1) to (8) on the right page correspond to

the numbers (1) to (8) on the left page.

Parameter area (a)

Parameter area (a)

Parameter area (b)

Positioning data area

(No.1 to 600)

Block start data area

(No.7000 to 7004)

PLC CPU

memo area

Monitor data area

Control data area

Buffer memory

Flash ROM

ROM

(3) PLC READY signal
[Y0] OFF ON

(1) Power supply ON/
PLC CPU reset

(2) TO command

(4) FROM command

QD75

Pr.7

Pr.1 to

Pr.11

Pr.24

to

Pr.43

Pr.57

to

Parameter area (b)

Pr.10

Pr.8 to

Pr.25

Pr.42

to

PLC CPU

Parameter area (a)

Parameter area (b)

Positioning data area

(No.1 to 600)

Block start data area

(No.7000 to 7004)

Pr.150