12 DATA USED FOR POSITIONING CONTROL
12.9 Memory Configuration and Data Process
555
12
• When the servo amplifier's power supply is turned ON after the PLC READY signal [Y0] is turned OFF to ON ((C) in the
following figure)
■How to change individually the servo parameter after transfer of servo parameter
The servo parameters can be individually changed from Simple Motion module with the following axis control data.
n: Axis No. - 1
• Both of the servo parameter area (internal memory (nonvolatile) and buffer memory/internal memory) of
Simple Motion module and the parameter of servo amplifier are changed.
• When the servo parameters that become valid by turning ON the servo amplifier's power supply are
changed, be sure to turn ON twice the servo amplifier's power supply after change. (The servo amplifier's
RAM data are changed by parameter setting, but the servo amplifier's EEPROM data are not changed. The
EEPROM data before the change are overwritten to RAM by the servo amplifier's power supply ON again,
and then the servo amplifier starts. After that, the changed data are written to the servo amplifier's EEPROM
in an initial communication with Simple Motion module. Therefore, the changed data are overwritten to the
RAM data by turning the servo amplifier's power supply ON again.)
Communication start timing with the servo
amplifier
When the servo amplifier had started ((B) in the following figure)
Servo parameter to be transferred The data written from the program/engineering tool before the PLC READY signal [Y0] ON. ((A) in the
following figure)
Setting item Setting details Buffer memory
address
[Cd.130] Servo parameter write
request
Set the write request of servo parameter.
Set "1" or "2" after setting "[Cd.131] Parameter No. (Setting for servo parameters to be changed)"
and "[Cd.132] Change data".
1: 1 word write request
2: 2 words write request
Other than 1 and 2: Not request
4354+100n
[Cd.131] Parameter No. (Setting
for servo parameters to
be changed)
Set the servo parameter to be changed. 4355+100n
[Cd.132] Change data Set the change value of servo parameter set in "[Cd.131] Parameter No. (Setting for servo
parameters to be changed)".
4356+100n
4357+100n
Indefinite value
RD77MS
power ON
Initialization
completion
of RD77MS
Communication start valid
0 (Standby)
20 (Servo amplifier has not been connected/servo amplifier power OFF)
[Md.26] Axis operation
status
21 (Servo OFF)
Servo parameter of
buffer memory/
internal memory
Communication
operation status
with servo amplifier
Buffer memory/
internal memory
data setting
CPU module
RUN
Axis connection completion
During communication
Communication start
(Axis connection)
Servo parameter setting from
the program/engineering tool (A)
PLC READY signal
[Y0] OFF
→
ON (C)
Communication invalid
READY [X0]
PLC READY [Y0]
Value of internal memory (nonvolatile)
Transfer the servo parameter at this point to the servo amplifier
Write value by the program/engineering tool
Servo amplifier
power ON (B)
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