Mitsubishi Electric MELSEC-Q Structured Programming Manual page 143

FXCPU Structured Programming Manual
[Device & Common]
Number and name
Step ladder and annunciator
M 8040
Disables transfer between states.
Transfer disable
*1
Enables transfer from the initial state during automatic
[M]8041
operation.
Transfer start
[M]8042
Gives pulse output in response to start input.
Start pulse
*1
M 8043
Should be set to ON in the zero return mode end state.
Zero point return
complete
*1
Should be set to ON when the machine zero point is
M 8044
detected.
Zero point condition
M 8045 Disables reset of all outputs when the operation mode
All output reset disable switches.
Remains ON while M8047 is ON and either one among S0
*2
[M]8046
STL state ON to S899 and S1000 to S4095
*2
M 8047
Enables M8040 to D8047.
STL monitoring enable
*2
Remains ON while M8049 is ON and either one among
[M]8048
S900 to S999 is ON.
Annunciator ON
*1
M 8049
Enables D8049.
Annunciator enable
*1. Cleared when the PLC mode switches from RUN to STOP.
*2. Activated when the END instruction is executed.
*3. S1000 to S4095 are available only in the FX
Interrupt disable
M 8050
(Input interrupt)
*4
I00 disable
M 8051
(Input interrupt)
*4
I10 disable
• When a special M for disabling input interrupt or timer
M 8052
interrupt is ON
(Input interrupt)
Even if an input interrupt or timer interrupt occurs while
*4
I20 disable
acceptance of the corresponding interrupt is disabled,
M 8053 the interrupt program is not executed.
(Input interrupt)
For example, when the interrupt I00
*4
I30 disable
M8050 is ON (to disable the interrupt I00 ), the interrupt
program is not executed even within the interrupt
M 8054
enabled program area.
(Input interrupt)
• When a special M for disabling input interrupt or timer
*4
I40 disable
interrupt is OFF
M 8055
a) When an input interrupt or timer interrupt occurs, it
(Input interrupt)
*4
I50 disable
b) The interrupt program is executed immediately if
M 8056
(Timer interrupt)
*4
I6 disable
M 8057
(Timer interrupt)
*4
I7 disable
M 8058
(Timer interrupt)
*4
I8 disable
M 8059
Counter interrupt
Disables interrupts I010 to I060.
*4
disable
*4. Cleared when the PLC mode switches from RUN to STOP.
Operation and function
*3
is ON.
is given while
is accepted.
interrupts are enabled by the EI instruction.
If the DI instruction disables interrupts, execution of
the interrupt program is paused until the EI
instruction enables interrupts.
4 Operations of Special Devices (M8000 and later, D8000 and later)
4.1 Special Device List (M8000 and later, D8000 and later)
FX FX FX
3U 3UC
, FX , FX , FX , or FX
3S 3G 3GC 3U
-
Applicable model
Corresponding
FX FX
3G 3GC 3S
special device
-
-
-
-
-
-
M8047
D8040 to D8047
- -
D8049
-
M8048
PLCs.
3UC
-
-
-
-
-
-
-
-
-
- - -
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