YASKAWA SGD7S

6.13 Absolute Linear Encoders
6.13.4 Reading the Position Data from the Absolute Linear Encoder
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6
Application Functions
Sequence for Reading the Position Data from the Absolute
Encoder without Using the SEN (Absolute Data Request) Signal
The sequence for reading the position data from the absolute linear encoder of a Linear Servomotor
without using the SEN signal is given below.
When the specified time has elapsed after the control power supply to the SERVOPACK is turned ON,
the SERVOPACK will automatically read the position data from the absolute linear encoder.
The upper 16-bit position data (with sign) are sent according to the transmission specifications.
The lower 20-bit data is output as a pulse train.
Power supplied.
Main circuit
power supply
Control power
supply
/S-RDY signal
ALM signal
/S-ON signal
PAO signal
PBO signal
PSO signal
Motor power status
Upper 16-bit position
data (with sign)
Lower 20-bit position data
(incremental pulses)
Lower 20-bit position data
(incremental pulses)
Incremental pulses
Incremental pulses
ON
OFF
OFF
ON
No alarm
ONOFF
ONOFF
Power not supplied.
Undened.
Undened.
Undened.
5 s max. 50 ms Approx. 15 ms
1 ms to 3 ms
400 ms max.
90 ms
typ.
Signed 36-bit
position data