Mitsubishi Electric MELSEC FX3U Programming Manual page 411

Melsec fx series programmable logic controllers
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FX
/FX
/FX
Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
2. Transfer mechanism
Start
X026
Zero point
(1) Moving
down
Y000
Lower
limit
X001
Clamping
(2) Clamping
Y001 ON
The upper left position is regarded as the zero point. The machine transfers a workpiece from the left to the
right in the order "moving down → clamping → moving up → rightward travel → moving down → unclamping
→ moving up → leftward travel."
Double-solenoid type solenoid valves (with two inputs for driving and non-driving) are adopted for moving
down, moving up, leftward travel and rightward travel. Single type solenoid valves (which operate only while
the power is ON) are adopted for clamping.
Left limit X004
(4) Rightward Y003
(8) Leftward Y004
Upper limit X002
(3) Moving up
Y002
What is the zero point condition?
Upper limit X002 is ON, left limit
X004 is ON and unclamping Y001
is OFF.
14 Handy Instruction – FNC 60 to FNC 69
14.1 FNC 60 – IST / Initial State
Right limit
X003
(1) Moving down
Y000
(7) Moving up
Y002
Lower
limit
X001
Unclamping
(6) Unclamping
Y001 OFF
Upper
limit
X002
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