Mitsubishi Electric MELSEC-Q Series User Manual page 373

QD77GF
power ON
Servo parameter of
Indefinite value
internal memory
Communication
operation status with Communication invalid
servo amplifier
Md.26 Axis operation
0 (Standby)
status
Fig. 7.1 When the servo amplifier had started before the system's power supply ON
QD77GF
power ON
PLC READY [Y0]
READY [X0]
Servo parameter of
Indefinite value
internal memory
Communication
operation status with Communication invalid
servo amplifier
Md.26 Axis operation
0 (Standby)
status
Fig. 7.2 When the servo amplifier had started after the PLC READY signal [Y0] is turned OFF to ON
(1) When the servo amplifier's power supply is turned ON before the system's
power supply ON.
Communication start timing to the servo amplifier: Initialization completion
Transfer the servo parameter
Initialization
Internal memory completion
data setting
of QD77GF (A)
Transfer the servo parameter at this point to the servo amplifier
20 (Servo amplifier has not been connected/servo amplifier power OFF)
(2) When the servo amplifier's power supply is turned ON after the PLC READY
signal [Y0] is turned OFF to ON (Fig. 7.2 (B)).
Communication start timing to the servo amplifier: When the servo amplifier
Transfer the servo parameter
Initialization
Internal memory completion
data setting of QD77GF
20 (Servo amplifier has not been connected/servo amplifier power OFF)
Chapter 7 Memory Configuration and Data Process
Value of internal memory (nonvolatile)
Communication start (Axis connection)
PLC READY
PLC CPU signal [Y0]
RUN OFF ON (B)
Value of internal memory (nonvolatile)
Communication start valid
7 - 15
(Fig. 7.1 (A))
: The data stored (backed
up) in the internal
memory (nonvolatile).
Axis connection completion
had started (Fig. 7.2 (A)).
: The data stored (backed
up) in the internal
memory (nonvolatile).
Servo amplifier
power ON (A) Axis connection completion
Transfer the servo parameter at this point to the
servo amplifier
Communication start
(Axis connection)
During
communication
21 (Servo OFF)
During
communication
21 (Servo OFF)