Mitsubishi Electric MELSEC-L LD75P User Manual page 774

Term
S-CURVE
ACCELERATION/DECELERATION
WITH MODE
XY TABLE
Z PHASE
ADDRESS
ABSOLUTE ENCODER
ABSOLUTE SYSTEM
INERTIA
772
In this pattern, the acceleration and deceleration follow a sine curve, and the movement is smooth.
The S-curve ratio can be set from 1 to 100%.
Acceleration Deceleration
This is the mode that outputs the M code before the start of the positioning. This mode turns ON at the
positioning start, enabling voltage to be applied to the welding electrodes, display of positioning speeds, etc.
Refer to the term "AFTER MODE".
This is a device that moves a table in the X (latitudinal) and Y (longitudinal) directions so that positioning can be
carried out easily. There are also commercially available products.
X table
Base table
X axis
Also called "PG zero".
Refer to the term "ZERO SIGNAL".
• This is a numerical value to express the positioning position, designated in mm, inch, angle, or No. of pulse
units.
• The memory address. Many addresses are stored in the memory. An address is read or written after it is
designated.
This is a detector that enables the angle data within 1 motor rotation to be output to an external destination.
Absolute encoders are generally able to output 360 in 8 to 12 bits.
Incremental encoders have a disadvantage in that the axis position is lost when a power failure occurs. However,
with absolute encoders, the axis position is not lost even when a power failure occurs.
Various codes such as a binary code and BCD code can be output. Absolute encoders are more expensive,
more accurate, and larger than incremental encoders. Refer to the term "ENCODER".
Slit disk
Phototransistor
Rotating
axis
This is one system for expressing a positioning address.
Absolute address system.
This system uses 0 as a reference, and expresses the address as the distance from 0. The direction is
automatically determined, even when it is not designated. The other address system is the increment system.
0 No.1
The property of an object, when not being affected by external forces, where it tries to maintain its current
condition. The inertia moment.
Description
Y table Ball screw
X table
Y axis
Fixed slit
Light-emitting diode
0
2
1
2
3
2
4
2
4
2
3
2
2
2
1
2
0
2
Binary code
N o 2 . N o 3 .