6.12 Absolute Encoders
6.12.4 Reading the Position Data from the Absolute Encoder
6-76
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.
6.1.1
Input Signal Allocations
on page 6-4
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
encoder. (This is the status after the power supply is
turned ON.)
ON (closed) Requests the position data from the absolute encoder.
Pull-Up Voltage (Vcc) Pull-Up Resistance (R1)
24 V
1.8 kΩ to 2.7 kΩ
12 V max.
820
Ω to 1.5 kΩ
5 V max.
180 Ω to 470 Ω
Circuit Example for Open-Collector Outputs
SERVOPACK
Host controller
PL1, PL2, or PL3 terminal
0 V
+12 V
4.7 kΩ
150 Ω
ON:
1.5 V max.
Approx. 9 mA
SERVOPACK
VF = 1.5 V to 1.8 V
Vcc
Tr 1
V
F
R1
i
Host controller
150 Ω
4.7 kΩ
Pull-up
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