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
â–
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.
â–
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)
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