Mitsubishi Electric MELSEC FX Series - Page 83

FX2N-1PG-E positioning Learning to Use the FX Family for Positioning Control
FX Positioning Control Systems 4 - 41
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The forward and reverse rotation limit switches must be wired so that they are turned ON by default (Nor-
mally closed contacts).
When these limit switches turn OFF (due the workpiece going out-of-bounds), M2 or M3 will turn ON and
cause the pulse operation to stop.
433030da.eps
Fig. 4-27: Program example (1)
M8002
M8000
M27
X000
X001
X002
X003
M8000
M0
M1
M2
M3
M7
FNC79
TO
K0 K0 K4000 K1
K0 K4 K40000 K1
K0 K6 K0 K1
K15
K28 K3M20
K29 D20
FNC79
DTO
K0 K1 K1000 K1
FNC79
TO
K0 K3 H32 K1
FNC79
DTO
FNC79
TO
FNC79
TO
FNC78
FROM
K0
K0
K0
FNC78
FROM
K100 K1
K1
K1
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



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
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
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Unit No. BFM # Pulse
rate
No. of
transfer
points
Unit No. BFM # Feed
rate
No. of
transfer
points
Unit No. BFM # Parameter
setting
No. of
transfer
points
Unit No. BFM # Maximum
speed
No. of
transfer
points
Unit No. BFM # Bias
speed
No. of
transfer
points
Unit No. BFM # Accel/
Decel
time
No. of
transfer
points
Unit No. BFM # Status
info.
M20-M31
No. of
transfer
points
Unit No. BFM # Error
code
No. of
transfer
points
RUN
monitor
Error flag
Error reset
STOP
Forward
rotation
limit

Reverse
rotation
limit

RUN
monitor
Initial pulse