
6.13 Absolute Linear Encoders
6.13.4 Reading the Position Data from the Absolute Linear Encoder
6-90
Allocating the SEN Signal to a General-Purpose Input
A circuit example for when the SEN signal is allocated to CN1-40 to CN1-46 on the I/O signal
connector is provided below.
Refer to the following section for the procedure to allocate input signals.
Using the Pull-Up Power Supply in the SERVOPACK
Using an External Pull-Up Power Supply
Type
Signal
Connector Pin No.
Signal Status
Meaning
Input
SEN
CN1-40 to CN1-46
OFF (open)
Does not request the position data from the absolute
linear encoder. (This is the status after the power sup-
ply is turned ON.)
ON (closed)
Requests the position data from the absolute linear
encoder.
Pull-Up Voltage (Vcc)
Pull-Up Resistance (R1)
24 V
1.8 k
Ω
to 2.7 k
Ω
12 V max.
820
Ω
to 1.5 k
Ω
5 V max.
180
Ω
to 470
Ω
Circuit Example for Open-Collector Outputs
S
ERVOPACK
Ho
s
t controller
PL1, PL2, or PL
3
terminal
0 V
+12 V
4.7 k
Ω
150
Ω
ON:
1.5 V max.
Approx. 9 mA
S
ERVOPACK
VF = 1.5 V to 1.8 V
Vcc
Tr1
VF
R1
i
Ho
s
t controller
150
Ω
4.7 k
Ω
Pull-up