9
Absolute Position Detection
9.4.2
Parameter Settings for Simple Absolute Infinite Length Position Control
9-18
• With SERVOPACKs in the
Σ
-III series
* This value depends on the setting of Pn212 (PG dividing ratio). The values in the table are
the maximum values.
[ c ] Max. Revolution of Absolute Encoder/Multiturn Limit Setting
These parameters determine the maximum value of the number of encoder turns managed by the
SERVOPACK and MP2300.
For an infinite length axis, set the parameters as shown in the table below.
* If the MP2300 fixed parameter 38 is set to 65535 when using a
Σ
-II series SERVOPACK for an
infinite axis, a fixed parameter setting error will occur.
Number of Bits
Fixed Parameter 36
(Encoder Resolution in Pulses/Resolution)
Fixed Parameter 22
(Pulse Counting Mode)
17
16384
∗
6: Pulse A/B mode (
×
4)
20
262144
∗
6: Pulse A/B mode (
×
4)
If the above settings are not used, correct motion control will not be performed. Set the parameters carefully.
Applicable
SERVOPAC
K
MP2300
Fixed Parameter 38
(Max. No. of Absolute Encoder Turns
）
SERVOPACK
Parameter Pn205
(Multiturn Limit Setting)
Σ
-II and
Σ
-III Series
Set the same value as Pn205 *
65534 max.
*
Σ-
I Series
99999
－
Set the parameters correctly as shown in the above table. Otherwise, correct motion control will not be per-
formed resulting in position error.
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