Data Transmission Process - Mitsubishi Electric QD77MS User Manual

7.2 Data transmission process

(1) Power supply ON/
PLC CPU reset
Flash ROM
Parameter area (a)
Parameter area (b)
Parameter area (c)
Positioning data area
(No.1 to 600)
Block start data area
(No.7000 to 7004)
Internal memory
(nonvolatile)
Servo parameter area
The data is transmitted between the memories of Simple Motion module with steps (1)
to (10) shown below.
: The data transmission patterns correspond to the numbers (1) to (10) in the
following drawings.
(4) FROM command
Buffer memory/Internal memory
(5) Servo amplifier data read
Chapter 7 Memory Configuration and Data Process
PLC CPU
(2) TO command
Parameter area (a)
Parameter area (b)
Parameter area (c)
Positioning data area
(No.1 to 600)
Block start data area
(No.7000 to 7004)
Servo parameter area
Monitor data area
Control data area
Servo amplifier
7 - 7
QD77MS
(1) Power supply ON/
PLC CPU reset: Valid
Parameter area (c)
(2) Valid upon execution of
the TO instruction.
Parameter area (b)
(3) PLC READY signal
[Y0] OFF ON: Valid
Parameter area (a)