Mitsubishi Electric SV13/22 Programming Manual page 348

APPENDICES
Number
M9054 STEP RUN flag
Status latch completion
M9055
flag
(Note-
M9084
Error check
2)
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Table 3.1 Special Relay List (Continued)
Name Stored Data
OFF STEP RUN not in effect
ON STEP RUN in effect
OFF Not completed
ON Completed
OFF Error check executed
ON No error check
Device
number
M9073 PCPUWDT error flag
M9074 PCPU ready completion flag
M9075 Test mode flag
M9076 External rapid stop input flag
M9077 Manual pulse generator axis setting error flag
M9078 Test mode request error flag
M9079 Servo program setting error flag
POINTS
(1) All special relays, M, are turned OFF by turning the power, OFF,
performing latch clear, or resetting with the RESET key switch.
When the RUN key switch is set to "STOP", the special relay settings are
retained.
(2) The special relays (Note-1) in the table above remain "ON" even after a
return to normal. They must therefore be turned OFF by using one of the
following methods.
(a) Method using the user program
Insert the ladder block at right into the program and turn the reset
execution command contact ON to clear the special relay.
(b) Method using a peripheral device
Perform a forced reset using the test function of the peripheral
device.
For details on this operation, refer to the manual for the peripheral
device.
(c) Turn the special relay OFF by setting the RESET key switch on the
front panel of the CPU module to "RESET".
Reset execution
command
(3) The ON/OFF status of special relays (Note-2) in the table above is
controlled by the sequence program.
search engine
!
ON when the RUN/STOP key switch is set to the RUN position.
!
Comes ON
Goes OFF on execution of a reset instruction.
! Set whether or not the error check shown below is executed on END
instruction processing. (Used to shorten END instruction processing
time.)
(1) Blown fuse check
(2) I/O module verification check
(3) Battery check
Signal name
direction
PCPU→SCPU
RST M9000
Enter the special relay
to be reset here.
APP − 30
Explanation
when status latch is
Signal
Refresh cycle Fetch cycle
END
completed.