YASKAWA SGD7S series Product Manual page 290

6.13 Absolute Linear Encoders
6.13.4 Reading the Position Data from the Absolute Linear Encoder
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.
Control power
upply
Main circuit
power upply
ALM ignal
/ -RDY ignal
/ -ON ignal
Motor power tatu
PAO ignal
PBO ignal
P O ignal
6-92
OFF
OFF
OFF
OFF
Undefined.
Undefined.
Undefined.
90 m
5 max. 50 m typ.
ON
ON
No alarm
Power not upplied.
Upper 16-bit po ition Lower 20-bit po ition data
data (with ign) (incremental pul e )
Lower 20-bit po ition data
(incremental pul e )
Approx. 15 m
400 m max.
1 m to m
ON
ON
Power upplied.
Incremental pul e
Incremental pul e
igned 6-bit
po ition data