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FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
14 Handy Instruction – FNC 60 to FNC 69
14.1 FNC 60 – IST / Initial State
14.1.2 Example of IST instruction introduction (example of workpiece transfer mechanism)
1. Operation mode
Operation mode
Contents of operation
Manual
mode
Individual
operation
mode
Each load is turned ON and OFF by an individual pushbutton switch.
Zero return
operation
mode
When the pushbutton switch for zero return is pressed, the machine automatically returns to the
zero point.
Automatic
mode
Stepping
operation
mode
Every time the start button is pressed, the machine performs one process.
Cycle
operation
mode
When the start button is pressed while the machine is located at the zero point, the machine
performs one cycle of automatic operation and stops at the zero point.
If the stop button is pressed in the middle of one cycle, the machine stops immediately. When
the start button is pressed after that, the machine performs the continuous operation from the
last position, and automatically stops at the zero point.
Continuous
operation
mode
When the start button is pressed while the machine is located at the zero point, the machine
starts continuous operation.
When the stop button is pressed, the machine finishes the current cycle until the zero point, and
then stops at the zero point.
Unclamping Y001
Pushbutton switches for the external circuit to
turn ON and OFF the load power supply
X025
X021
X020
X022
X023
X024
Start X 026
Stop X027
X005
X006
X007
X010
X011
X012
PB
PB
PB
PB
PB
PB
PB
PB
PB
PB
PB
Zero return
Zero return
operation mode
Stepping
operation
Individual
operation mode
Moving up
Leftward
travel
Unclamping
Moving down
Rightward
travel
Clamping
Continuous
operation mode
Cycle
operation mode
Power supply
Emergency stop
Pushbutton switches for individual operations
of the robot hand shown in the figure on the right
Left limit X004
Y004
Y003
Rightward Right limit X003
Leftward
Y002
Y000
Upper
limit X002 Moving down
Moving
up
Clamping Y001
Workpiece
Point A
Point B
Mechanism for transferring a workpiece from the
point A to the point B using the robot hand
Lower
limit X001