LG Electronics 120S user manual Usage of Various Functions Positioning function, Goal address

Chapter 7 Usage of Various Functions

7.3.2 Positioning function

1) Positioning function

Positioning Control includes position control, speed control.

(1)Position control

Positioning control from start address (present stopped position) to goal address (transfer amount) for the assigned axis

A)Control by Absolute method (Absolute coordinate)

ⓐPositioning control from start address to goal address (the address assigned by positioning data). ⓑ Positioning control is carried out based on the address assigned (origin address) by return to origin. ⓒ Transfer direction shall be determined by start address and goal address.

•Start address < Goal address : forward direction positioning

•Start address > Goal address : reverse direction positioning

Example] When Start address is 1000 and goal address is 8000, this will be forward direction and transfer amount shall be 7000 (7000=8000-1000).

0	1000	8000
		Transfer amount :7000
Start address		Goal address

• Parameter setting

	Items of positioning data	Step No.	Coordinate	Operation mode	Operation method	Goal address	Speed(pps)	Dwell time(㎳)
	Setting	1	Absolute	End	Single	8,000	5,000	100
B) Control by Incremental method (Relative coordinate)
ⓐ Positioning control as much as the goal transfer amount from start address.
ⓑ Transfer direction shall be determined by the sign of transfer amount.
	• When transfer direction is (+) or no sign : forward direction (address increase) positioning
	• When transfer direction is (-)		: reverse direction (address decrease) positioning

Start Address

Normal

Reverse

Transfer direction when transfer amount (-)

Transfer direction when transfer amount (+)

Example) When start address is 5000 and goal address is -7000, this will be reverse direction and positioning will be at the point of 2000

-2000	0	5000
Reverse positioning control (transfer amount-7000)
Goal address		Start address

•Parameter setting

Items of positioning data	Step No.	Coordinate	Operation mode	Operation method	Goal address	Speed(pps)	Dwell time(㎳)
Setting	1	Incremental	End	Single	-7,000	5,000	100

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