YASKAWA MP2200

7
Absolute Position Detection
7.3.2
Infinite Length Axis
7-20
[ c ] Application Example of Simple Absolute Infinite Length Position Control Function
An example of using the simple absolute infinite length position control function is given
below.
[ d ] Setting the Zero Point for a Simple Absolute Infinite Axis
Set the zero point as described here after initializing the absolute encoder to set the zero point of the
machine coordinate system and establish the machine coordinate system.
The procedure to set the zero point for a simple absolute infinite axis is shown below.
* 1. The OL

48 value must be saved when it is set.
* 2. See the information on the 7-17 page for more details on saving the OL

48 value.
EXAMPLE
No. Name Setting
■
Calculation of the Number to Turns to
Reset
360000
×
6 / 360000
×
5 = 6/5 (number of turns to
reset)
■
Conditions
(59705+1) / (6/5) = 49755
The result is an integer, i.e., the remainder is 0, so
the simple absolute infinite length position control
function can be used.
4
Command Unit 2
6
Command Unit per Revolution 360000
8
Gear Ratio [MOTOR] 6
9
Gear Ratio [LOAD] 5
10
Maximum Value of Rotary Counter 360000
36
Encoder Resolution 16384
38
Max. Revolution of Absolute
Encoder
59705
Repeat for every axis.
Start
Servo ON
STEP to move to the
zero point.
OL48 = OL48 - IL10
Save OL48.
*2
End
JOG to move close to
the zero point.
YES
NO
Set the zero point.
*3
*1
Has the setting for the required
axis been completed?
WWW.NNC.IR