Mitsubishi Electric FR - F700 Programming Manual page 102

Special
Item
Relay
Initial
processing
M9038
flag
(1 scan ON)
Normal OFF
M9037
flag
Normally ON
M9036
flag
RUN flag M9039
Table3.4 Special Relay Application List
(1) This relay turns on for one scan when the built-in PLC function
switches from STOP to RUN.
Sequence
program
M9038
(2) Using M9038, you can create a sequence program to be
executed only once without using the PLS instruction at
switching from STOP to RUN.
M9038
This relay remains off while power is on.
Can be used to temporarily disable execution for debugging, etc.
This relay is on while power is on.
Can be used to create a program to be executed only once after
power-on.
This relay turns on at the second scan of the sequence program
when the SQ signal is ON.
Sequence
program
M9039
Special relays, special registers
Application/Description
0 END/0 END/0 END/0 END/0
1 scan
ON
OFF
Switching from STOP to RUN
Initial processing program
0 END/0
ON
OFF
RUN
3
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