6. SERVO PROGRAMS FOR POSITIONING CONTROL
6
−
2
(3) Positioning data...... This is the data required to execute servo instructions.
The data required for execution is fixed for each servo
instruction.
For details, see Section 6.3.
The follows applies for the servo program shown in Figure
6.1:
•
Used axes and
positioning address
•
Commanded speed
Data which must be set in order to
execute the servo instruction.
•
Dwell time
•
M code
Data which will be set to default
values for control if not set.
•
P.B.
(parameter block)
Control is executed using the data
of parameter block 1 (P.B.1).
6.1.2
Servo program area
(1) Servo program area
The servo program area is an internal memory of the system CPU (not in the
memory cassette) which serves to store the servo program created with a
peripheral device.
The servo program area is an internal RAM.
(2) Servo program capacity
The servo program area has a capacity of 14334 steps.
Program No.10
Program No. 1
Program No. 2
0
14333
Servo programs are stored in the order in which
their program numbers were created.
Servo program area
(14k steps)
Step
Fig. 6.2 Servo Program Area
POINT
If the servo program area has insufficient capacity, execute multiple
positioning control operations with one program by indirect setting of the
positioning data used in the servo program. (For details on indirect setting,
see Section 6.4.2.)
