Mitsubishi Electric M830W User Manual

M800W/M80W Series Connection and Setup Manual
25 Setting the Position Detection System
484
IB-1501268-K
There are two kinds of position detection system: one is "relative position detection", which establishes the reference
position (zero point) at every CNC power-ON; the other is "absolute position detection", which allows to start the
operation without establishing the reference position (zero point) again after the CNC power-ON.
25.1 Adjusting the Absolute Position Detection System
There are four types of the absolute position zero point initial setting: "marked point alignment method", "marked point
alignment method II", "machine end stopper method", and "dog-type".
Set the parameter "#2049 type (Absolute position detection method)" for the type and method of absolute position zero
point initial setting.
The required components differ depending on the detection method.
[Characteristics of each method]
(1) Marked point alignment method I
Align the table side’s mark and the machine side’s mark.
The first grid point which is returned from the marks are aligned is determined as the basic position.
Because the first grid point which is returned from the marks are aligned is determined as the basic position, the
reproducibility is kept even the position information is lost due to runnning out of battery etc.
(2) Marked point alignment method II
Align the table side’s mark and the machine side’s mark.
The position where the marks are aligned is determined as the basic position.
Because the position where the marks are alinged is determined as the basic position, the reproductivity is low if the
position information is lost due to running out of battery etc.
(3) Machine end stopper method
Push the table against the machine end stopper.
[When #2059 zerbas = 0]
The position where the table is pushed against the machine end stopper is determined as the basic position.
[When #2059 zerbas = 1]
The first grid point which is returned from the position where the table is pushed against the machine end
stopper is determined as the basic position.
There are two types of the machine end stopper method: automatic initialization and manual initialization.
When the automatic initialization is applied, the axis travels automatically after the JOG is started.
When the manual initialization is applied, the axis travels by handle mode or JOG mode while confirming each
operation.
(4) Dog method
This method requires a dog sensor.
Move the table until the dog is kicked, and the first grid point after the dog OFF is determined as the basic position.
Method
Required
component
Basic position
#2049
type
#2059
zerbas
Reference
Marked point alignment method I
None
The first grid point which is returned from the position where
the mark is aligned.
2 1 25.1.1
Marked point alignment method II
None The position where the marks are aligned.
4 0 25.1.2
Machine end stopper method
Machine end
stopper
The position where the table is pushed against the machine
end stopper.
10
25.1.3
25.1.4
The first grid pointed which is returned from the position
where the table is pushed against the machine end stopper.
11
Dog type
Dog,
dog-sensor
The first grid point after the dog OFF.
3 0 25.1.5

Mitsubishi Electric M830W Specifications

General

Brand	Mitsubishi Electric
Model	M830W
Category	Control Systems
Language	English