Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 630

• The switch functions shown in the table below are assigned to each of the devices specified for selector switches in the
operation mode. When X20 is assigned, it is necessary to set X20 to X24 as rotary switches so that they do not turn ON at
the same time. It is not necessary to wire unused switches, but they cannot be used for any other purpose because they
are occupied by IST instruction.
Source Device number
(example)
(s) X20
(s)+1 X21
(s)+2 X22
(s)+3 X23
(s)+4 X24
(s)+5 X25
(s)+6 X26
(s)+7 X27
• Specify the smallest device number of practical state relays in (d1) (for the automatic mode).
• Specify the largest device number of practical state relays in (d2) (for the automatic mode).
• While the command input is ON, the following devices are automatically switched and controlled. While the command input
is OFF, the devices are not switched.
Device number Descriptions
SM8040 STL transfer disable
SM8041 Transfer start
SM8042 Start pulse
SM8043 Zero return complete
SM8044 Zero return condition
SM8045 All output reset disable
SM8046 STL state ON
SM8047 Enable STL monitoring
8 APPLICATION INSTRUCTION
628
8.19 Initial State
Switch function Descriptions
Individual operation Each load is turned ON and OFF by an individual pushbutton switch.
Return to zero point When the pushbutton switch for zero return is pressed, the machine automatically returns to
the zero point.
Stepping Every time the start button is pressed, the machine performs one process.
Cycle operation 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 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.
Zero return start Starts return to the zero point.
Automatic start Starts the stepping operation, cycle operation or continuous operation.
Stop Stops each operation.
ON/OFF condition
ON condition
OFF condition
ON condition
OFF condition
ON condition
OFF condition
ON condition
OFF condition
ON condition
OFF condition
ON condition
OFF condition
ON condition
OFF condition
ON condition
OFF condition
Always remains ON in the individual operation.
Always remains ON in the stepping operation except when the [START] button is
pressed.
Turns ON when the [STOP] button is pressed during return to the zero point and in
the cycle operation.
Turns OFF when the [START] button is pressed in the stepping operation.
Turns OFF after the [STOP] button is pressed during return to the zero point and in
the cycle operation.
Turns ON when the [START] button is pressed in the stepping operation and cycle
operation.
Turns ON after the [START] button is pressed in the cycle operation.
Turns OFF when the operation mode is changed from RUN to STOP.
Always remains OFF in the individual operation and during return to the zero point.
Turns OFF after the [STOP] button is pressed in the continuous operation.
Instantaneously turns ON when the [START] button is pressed.
Remains OFF except in the ON condition.
Turns ON when return to the zero point is completed (in the user program).
Turns OFF when the operation mode is changed from RUN to STOP.
Remains OFF while return to the zero point is not completed.
Turns ON when the zero point condition is established (in the user program).
Turns OFF when the operation mode is changed from RUN to STOP.
Remains OFF while return to the zero point is not completed.
Turns ON when all-output reset is not executed (in the user program).
Turns OFF when all-output reset is executed (in the user program).
Turns ON when SM8047 (Enable STL monitoring) is ON and either step relay (device
S) is ON.
Turns OFF when SM8047 (Enable STL monitoring) is OFF or when SM8047 (STL
monitor enable) is ON and all step relays (device S) are OFF.
Turns ON when the IST instruction command is given.
Turns OFF when the step ladder is finished (in the user program).