Mitsubishi MELSEC-Q QD77MS, User Manual

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Chapter 13 Control Sub Functions
[4] When the hardware stroke limit function is not used
When not using the hardware stroke limit function, wire the terminals of the
QD77MS/servo amplifier upper/lower limit stroke limit as shown in the following
drawing.
When the logic of FLS and RLS of the external input signal of QD77MS, external
input signal of servo amplifier or external input signal via CPU (buffer memory of
QD77MS) is set to "positive logic" using "
Pr.22 Input signal logic selection",
positioning control can be carried out even if FLS and RLS are not wired. (For
details, refer to Section 14.5 "External I/O signal logic switching function".)
QD77MS
COM
24VDC
FLS
RLS
Servo amplifier
DICOM
24VDC
DI1
(FLS)
DI2
(RLS)
Fig. 13.19 Wiring when not using the hardware stroke limit function
(When " Pr.22 Input signal logic selection" is the initial value)