Chapter 9 Major Positioning Control; Overview Of Major Positioning Control - Mitsubishi Electric MELSEC Q Series User Manual

CHAPTER 9
"Major positioning control" is executed using "variable parameters" and "positioning data" stored in the QD73A1. The
position control mode or the speed-position control switch mode is executed by setting a variable parameter
" Positioning mode" and a positioning data item "
Pr.9
9.1

Overview of Major Positioning Control

The following types of "major positioning control" are executed when a positioning start signal (Y21 to Y23) is turned
on.
Major positioning control
Positioning control
Position control
mode
Two-phase
trapezoidal
positioning control
Speed-position control switch mode
MAJOR POSITIONING CONTROL
Da.1
Start signal
Positioning is executed from the current
position to a specified position at a specified
speed.
[Buffer memory setting]
•
•
• Absolute positioning start
signal (Y21)
Positioning is executed to the address
• Forward start signal (Y22)
specified with "
(incremental positioning)
P1" at "
• Reverse start signal (Y23)
the address specified with "
(incremental positioning)
address P2" at "
by one positioning start signal.
[Buffer memory setting]
•
•
Operation starts according to the positioning
speed set beforehand by one positioning start
signal, then the operation switches to position
control by Speed-position switching
command signal (CHANGE).
If the operation stopped by Stop signal after
• Forward start signal (Y22)
the input of Speed-position switching
(Speed-position control
command signal (CHANGE), the positioning
switchover)
can be continued by requesting a restart.
• Reverse start signal (Y23)
In addition, the positioning address
(Speed-position control
(movement amount) can be changed if it is
switchover)
before the input of Speed-position switching
command signal (CHANGE).
[Buffer memory setting]
•
•

CHAPTER 9 MAJOR POSITIONING CONTROL

Positioning pattern" and by starting the positioning data.
Description
Positioning mode: 0
Pr.9
Positioning pattern: 0
Da.1
Positioning address
Da.2
Positioning speed V1", then to
Da.3
Positioning
Da.4
Positioning speed V2"
Da.5
Positioning mode: 0
Pr.9
Positioning pattern: 1
Da.1
Positioning mode: 1
Pr.9
Positioning pattern: 0
Da.1
9
Reference
Page 191,
Section 9.6.1 (1)
Page 192,
Section 9.6.1 (2)
Page 195,
Section 9.6.2
185