Mitsubishi Electric MELSEC-L LD75D, Руководство пользователя

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53
CHAPTER 3 SPECIFICATIONS AND FUNCTIONS
3
3.
2
List
of
F
unct
ions
3.2.2
LD75 main functions
The outline of the main functions for positioning control with the LD75 is described below.
(Refer to PART 2 for details on each function.)
Main functions Details Reference
OPR control
Machine OPR control
Mechanically establishes the positioning start point using a near-
point dog or stopper.
(Positioning start No. 9001)
Page 318, Section 8.2
Fast OPR control
Positions a target to the OP address ([Md.21] Machine feed
value) stored in the LD75 using machine OPR. (Positioning start
No. 9002)
Page 337, Section 8.3
Major
positioning
control
Position
control
Linear control
(1-axis linear control)
(2-axis linear interpolation
control)
(3-axis linear interpolation
control)
(4-axis linear interpolation
control)
Positions a target using a linear path to the address set in the
positioning data or to the position designated with the movement
amount.
Page 366, Section 9.2.2
Page 368, Section 9.2.3
Page 372, Section 9.2.4
Page 376, Section 9.2.5
Fixed-feed control
(1-axis fixed-feed control)
(2-axis fixed-feed control)
(3-axis fixed-feed control)
(4-axis fixed-feed control)
Positions a target by the movement amount designated with the
amount set in the positioning data.
(With fixed-feed control, the "[Md.20] Current feed value" is set to
"0" when the control is started. With 2-, 3-, or 4-axis fixed-feed
control, the fixed-feed is fed along a linear path obtained by
interpolation.)
Page 379, Section 9.2.6
Page 381, Section 9.2.7
Page 384, Section 9.2.8
Page 388, Section 9.2.9
2-axis circular
interpolation control
Positions a target using an arc path to the address set in the
positioning data, or to the position designated with the movement
amount, sub point or center point.
Page 391, Section 9.2.10
Page 395, Section 9.2.11
3-axis helical interpolation
control
Positions a target using a helical path to a position specified with
the address, movement amount, sub point, or center point set in
the positioning data.
Page 402, Section 9.2.12
Page 408, Section 9.2.13
Speed control
Speed control
(1-axis speed control)
(2-axis speed control)
(3-axis speed control)
(4-axis speed control)
Continuously outputs the pulses corresponding to the command
speed set in the positioning data.
Page 416, Section 9.2.14
Page 419, Section 9.2.15
Page 422, Section 9.2.16
Page 425, Section 9.2.17
Speed-position switching control
First, carries out speed control, and then carries out position
control (positioning with designated address or movement
amount) by turning the "speed-position switching signal" ON.
Page 428, Section 9.2.18
Page 435, Section 9.2.19
Position-speed switching control
First, carries out position control, and then carries out speed
control (continuous output of the pulses corresponding to the
designated command speed) by turning the "position-speed
switching signal" ON.
Page 441, Section 9.2.20
Other control
Current value changing
Changes the Current feed value ([Md.20]) to the address set in
the positioning data.
The following two methods can be used.
(The machine feed value cannot be changed.)
• Current value changing using positioning data
• Current value changing using current value changing start No.
(No. 9003)
Page 447, Section 9.2.21
NOP instruction
No execution control system. When NOP instruction is set, this
instruction is not executed and the operation of the next data is
started.
Page 451, Section 9.2.22
JUMP instruction
Unconditionally or conditionally jumps to designated positioning
data No.
Page 452, Section 9.2.23
LOOP Carries out loop control with repeated LOOP to LEND. Page 454, Section 9.2.24
LEND
Returns to the beginning of the loop control with repeated LOOP
to LEND.
Page 455, Section 9.2.25