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5 Operation
5.9.1 Absolute Data Request Signal (SEN)
5-70
5.9 Absolute Linear Scales
If using an absolute linear scale, a system to detect the absolute position can be designed for use with the host
controller. As a result, an operation can be performed without a zero point return operation immediately after
the power is turned ON.
For details on how to set up the absolute linear scale, refer
to 5 Trial Operation (Checking Linear Servomotor
Operation) in the
-V Series User’s Manual, Setup, Linear Motor (No.: SIEP S800000 44).
Set Pn002.2 to 0 (factory setting) to use the absolute linear scale.
The SEN signal is not required when using the absolute linear scale
as an incremental linear scale.
5.9.1 Absolute Data Request Signal (SEN)
The absolute data request signal (SEN) must be input to obtain absolute data as an output from the SERVO-
PACK.
The following table describes the SEN signal.
The SEN signal is input at the following timing.
Parameter Meaning
When
Enabled
Classification
Pn002
n.0
[Factory setting]
Uses the absolute linear scale as an absolute linear
scale.
After restart Setup
n.1
Uses the absolute linear scale as an incremental linear
sc
ale.
Type Signal Name
Connector
Pin Number
Setting Meaning
Input SEN CN1-4
OFF (low level) Disabled
ON (high level)
The host controller sends a request to
the SERVOPACK for the absolute data.
4.7 kΩ
SEN
4
CN1
SG
2
+5 V
0 V
100 Ω
0 V
0.1 μF
Host controller
SERVOPACK
High level:
Approx. 1 mA
7406
or the equivalent
We recommend a PNP transistor.
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