Mitsubishi Electric Q Series Programming Manual page 47

4 POSITIONING DEDICATED SIGNALS
When using the absolute position system function, on starting up, and when the Motion
controller or absolute value motor has been replaced, always perform a home position return
in real mode. In the case of the absolute position system, use the PLC program to check the
home position return request before performing the positioning operation.
Failure to observe this could lead to an accident such as a collision.
(b) When using an absolute position system
1) This signal turns on in the following cases:
• When not executing a home position return once after system start.
• Home position return start in the real mode
(Unless a home position return is completed normally, the home
position return request signal does not turn off.)
• Erase of an absolute data in Motion CPU according to causes, such
as battery error
• Servo error [2025] (absolute position erase) occurrence
• Servo error [2143] (absolute position counter warning) occurrence
• Major error [1202], [1203] or [1204] occurrence
• When the
changed.
2) This signal turns off by the completion of the home position return.
(6) Home position return complete signal (M2410+20n)
(a) This signal turns on when the home position return operation using the
servo program has been completed normally.
(b) This signal turns off at the positioning start, JOG operation start and manual
pulse generator operation start.
(c) If the home position return of proximity dog, dog cradle or stopper type
using the servo program is executed during this signal on, the "continuous
home position return start error (minor error: 115)" occurs and it cannot be
start the home position return.
(7) FLS signal (M2411+20n)
(a) This signal is controlled by the ON/OFF state for the upper stroke limit
switch input (FLS) of the Q172DLX/servo amplifier.
• Upper stroke limit switch input OFF ...... FLS signal: ON
• Upper stroke limit switch input ON ........ FLS signal: OFF
rotation direction selection
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CAUTION
(Note-1) .................................... Status signal
4 - 16
of servo parameter is
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............... Status signal