Mitsubishi MELSEC-A Series Programming Manual page 408

APPENDICES
Number Name
0.1 second
M9030
clock
0.2 second
M9031
clock
M9032 1 second clock
M9033 2 second clock
M9034 1 minute clock
M9036 Normally ON
M9037 Normally OFF
On only for 1
M9038
scan after run
RUN flag
M9039 (off only for 1
scan after run)
PAUSE enable
M9040
coil
PAUSE status
M9041
contact
Stop status
M9042
contact
Sampling trace
M9043
completion
M9044 Sampling trace
Watchdog timer
M9045
(WDT) reset
Table 1.1 Special Relay List (Continue)
Description
0.05
seconds 0.05
seconds
0.1
0.1 • 0.1 second, 0.2 second, 1 second, 2 second, and 1
seconds
seconds
minute clocks are generated.
• Not turned on and off per scan but turned on and
0.5
off even during scan if corresponding time has
seconds 0.5
elapsed.
seconds
• Starts with off when power is turned on or reset is
performed.
1
second 1
second
30
30
seconds
seconds
ON
OFF • Used as dummy contacts of initialization and
application instruction in sequence program.
• M9036 and M9037 are turned on and off without
ON
regard to position of key switch on CPU front.
OFF
M9038 and M9039 are under the same condition
as RUN status except when the key switch is at
ON
STOP position, and turned off and on. Switched off
1 scan
OFF if the key switch is in STOP position. M9038 is on
for one scan only and M9039 is off for one scan
only if the key switch is not in STOP position.
ON
1 scan
OFF
OFF:PAUSE disabled
• When RUN key switch is at PAUSE position or
ON: PAUSE enabled
remote pause contact has turned on and if M9040
OFF:Not during pause
is on, PAUSE mode is set and M9041 is turned on.
ON: During pause
OFF:Not during stop • Switched on when the RUN key switch is in STOP
ON: During stop position.
OFF:During sampling • Turned on upon completion of sampling trace
trace performed the number of times preset by
ON: Sampling trace parameter after
completion Reset when
• Turning on/off M9044 can execute
instruction.
(M9044 is forcibly turned on/off by a peripheral
device.)
OFF ON:
STRA
When switched from OFF to ON:
Same as execution
instruction
ON OFF:
STRAR
When switched from ON to OFF:
Same as execution
instruction
The value stored in D9044 is used as the condition
for the sampling trace.
At scanning, at time
• Turn on M9045 to reset the WDT upon execution
OFF:WDT not reset of a
ON: WDT reset request batch process. (Use this function for scan
times exceeding 200 ms.)
Details
instruction is executed.
STRA
instruction is executed.
STRAR
Time (10 msec unit)
instruction or data communication
ZCOM
APP - 3
Applicable CPU
Unusable with
A3V.
Usable with all
types of CPU.
Usable with all
types of CPU.
Usable with all
types of CPU.
Unusable with A1,
A1N, AnA, AnU
and QCPU-A
(A Mode).
/
STRA STRAR
STRA
Unusable with A1
and A1N.
STRAR
Unusable with A1
and A1N.