9
Absolute Position Detection
9.3.1
Parameter Settings for Finite Length Axes
9-8
( 3 ) Detailed Descriptions
[ a ] Axis Selection (MP2300 Fixed Parameter No.1, Bit 0)
This setting is used to select either an finite or infinite length axis.
Set to 0 when using the axis as a finite length axis.
[ b ] Encoder Selection and Absolute Encoder Usage
For an axis performing absolute position detection, set the parameters as shown in the following
table.
[ c ] Number of Encoder Resolution
■
If using the SVB-01 Module or the built-in SVB Module
Refer to the following table and set the fixed parameter 36 (Encoder Resolution in Pulses/Resolution)
according to the number of servomotor bits. The settings can be used for all SERVOPACK models.
■
If using the SVA-01 Module
The methods of setting the fixed parameters 36 and 22 differ depending on the SERVOPACK used.
• With SERVOPACKs in the
Σ
series
• With SERVOPACKs in the
Σ
-II series
Model Parameter Setting
MP2300
Fixed parameter 30
(Encoder Selection)
1: Absolute encoder
Σ-
II
, Σ-
III Series
Parameter: Pn002.2
(
Absolute Encoder Usage
)
0: Uses absolute encoder as an absolute encoder.
Σ-
I Series
Parameter:
Cn-0001 Bit E
(Encoder Selection)
1: Absolute encoder
If the above settings are not used, correct motion control will not be performed. Set the parameters carefully.
Be sure to set both the MP2300 and SERVOPACK parameters.
Number of Bits
MP2300
Fixed Parameter 36
(Encoder Resolution in Pulses/Resolution)
12 4096
13 8192
15 32768
16 65536
17 131072
20 1048576
Number of Bits
MP2300
Fixed Parameter 36
(Encoder Resolution in Pulses/Resolution)
Fixed Parameter 22
(Pulse Counting Mode)
12 1024
6: Pulse A/B mode (
×
4)
15 8192
6: Pulse A/B mode (
×
4)
Number of Bits
Fixed Parameter 36
(Encoder Resolution in Pulses/Resolution)
Fixed Parameter 22
(Pulse Counting Mode)
13
2048
∗
1
6: Pulse A/B mode (
×
4)