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6 POSITIONING CONTROL
6.23.7 Home position return by the data set type 1
(1) Data set type 1
The proximity dog is not used in this method for the absolute position system.
(2) Home position return by the data set type 1
Home position is the command position at the home position return operation.
Home position return
by the servo program
start instruction
t
The address at the home position
return operation is registered
as the home position address.
Fig. 6.38 Home position return operation by the date set type 1
(3) Home position return execution
Home position return by the data set type 1 is executed using the servo program
in Section 6.23.16.
(4) Cautions
(a) A zero point must be passed (zero pass signal: M2406+20n ON) between
turning ON the power supply and executing home position return.
If home position return is executed without passing a zero point once, "no
zero point passed error" occurs. If "no zero point passed error" occurred,
perform the home position return again, after reset the error and turn the
servomotor at least one revolution by the JOG operation.
The zero point passing can be confirmed with the zero pass signal
(M2406+20n). However, when "1 : Not need to pass motor Z phase after the
power supply is switched on" is selected in the "function selection C-4" of
servo parameter (expansion setting parameter), even if it does not pass zero
point at the servo amplifier power ON, the home position return is possible
because the zero pass signal (M2406+20n) turns ON.
(b) Home position return is started by the data set type 1 when the absolute
position system does not support, it becomes same function as the current
value change command.
(c) The home position return data required for the data set type 1 are the home
position return direction and home position address.
(d) If in-position signal (M2402+20n) does not turn ON, home position return is
not ended.