IAI XSEL - Page 386

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Appendix
Appendix
9. Output of Home Return and Home Return Complete Signal
Description
Output a signal to confirm completion of home return (incremental specification or quasi-absolute specification).
With the XSEL controller, a home return completion signal can be output using an I/O parameter. However, the
following explains how to output a home return completion signal within a program using a general-purpose
output.
Once turned ON, a general-purpose output will remain ON even after the current program ends or other program
is started. (It will turn OFF upon emergency stop, etc., but the ON status can be maintained using an I/O
parameter (I/O parameter Nos. 70 and 71).)
Example of Use
a. Output a home return completion signal.
Execute home return.
General-purpose output (arbitrary)
b. Use a home return completion signal to make sure the actuator will not perform home return if it has
already been performed.
Execute home return if output 303 is OFF.
Home return completion output
c. Use the output field instead of a BTON command.
Execute the same processing performed with
the above two steps.
Reference
Output port No. 304 can be used as a home return completion output (dedicated output) by setting I/O parameter
No. 50 to “2.”
Caution: Take note that if you are using the linear servo actuator LSAS-N10/N15 of quasi-absolute
type, after completing a home return operation following power on the actuator moves in a
range of approx. 16 mm from the stopped position to confirm the current position.