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5 SERVO PROGRAMS FOR POSITIONING CONTROL
5.4.2 Indirect setting method by word devices (D, W and #)
In the indirect setting method
(Note-1)
by word devices, the word device (D, W and #) No.
is specified to the positioning data specified with the servo program.
By using the contents (data) of specified word device using the Motion SFC program
(Automatic refresh, etc.), multiple positioning controls can be executed in one servo
program.
The word device used in the indirect setting is the device of the Motion CPU but the
device of the PLC CPU.
The device memory composition of the Motion CPU and PLC CPU is shown below.
Composition between modules
Sensor, solenoid, etc.
(DI/O)
Motion CPU
Shared memory
1)
PLC CPU
Device memory
PLC intelligent function
module (A/D, D/A, etc.)
Motion control dedicated I/F
(DOG signal, manual pulse
generator)
Shared memory
Device memory
Motion control
processor
2)
M
M
SSCNET
Servo amplifier
Servomotor
PLC bus
Note
)
: Device memor
y
data : 1
)
= 2
)
PLC control
processor
(Note-1): Device memory in the Motion CPU.