Mitsubishi Electric MELSEC-Q QD75M User Manual page 343

7 MEMORY CONFIGURATION AND DATA PROCESS
Communication
operation status
with servo amplifer
Servo parameter of
buffer memory
1 : The servo parameter that it is stored into the flash ROM is transfered to the buffer memory by the QD75
initialization of the data, when the power is turned ON.
2 : Communication with servo amplifer is carried out if the QD75 initialization of the data is completed after
power supply ON.
3 : When the servo parameter is written in the flash ROM, it is unnecessary to use a setup from the PLC program.
Fig. 7.1 Operation timing in the servo parameter transfer of the buffer memory
How to transfer the servo parameter which wrote it in the flash ROM
to servo amplifier
Flash ROM writing carried out after the servo parameter is set up in the buffer
memory.
After that, when the power is turned ON or the PLC CPU is reset, the servo
parameters stored in the flash ROM is transmitted to the buffer memory.
When the servo parameter is written in the flash ROM, it is unnecessary to use a
setup from the PLC program.
Servo parameter of the buffer memory
The following shows details about the operation timing and details the servo
parameter transfer of the buffer memory.
QD75 Buffer memory
power ON data setting
Communication
start valid
1
Indefinite value
Operation details
(1) Servo parameter transfers when servo amplifier had started and the power
supply of QD75 is turned ON.
(a) When the servo parameter "
ROM.
Communication start timing to the servo amplifier: Initialization completion
Transfer the servo parameter
Initialization PLC CPU
completion RUN
of QD75 (A)
2
Value of flash ROM
motor capacity" "0" is stored flash
Pr.104
7 - 18
MELSEC-Q
Servo parameter
PLC READY signal [Y0]
setting from PLC
OFF ON (B)
program (C)
3
2
Communication
start invalid
Write value by PLC program
(Fig. 7.1 A)
: The data stored (backed
up) in the flash ROM.
t