Mitsubishi Q2ACPU User Manual page 450

APPENDICES
(3) System clocks/counters
Number Name
SM400 Always ON
SM401 Always OFF
After RUN, ON for 1
SM402
scan only
After RUN, OFF for 1
SM403
scan only
Low speed execution
SM404 type programON for 1
scan only after RUN
Low speed execution
type programAfter
SM405
RUN, OFF for 1 scan
only
SM410 0.1 second clock
SM411 0.2 second clock
SM412 1 second clock
SM413 2 second clock
SM414 2n second clock
SM420 User timing clock No.0
SM421 User timing clock No.1
SM422 User timing clock No.2
SM423 User timing clock No.3
SM424 User timing clock No.4
SM430 User timing clock No.5
SM431 User timing clock No.6
SM432 User timing clock No.7
SM433 User timing clock No.8
SM434 User timing clock No.9
Table App. 2.4. Special relay
Meaning
ON
• Normally is ON
OFF
ON
• Normally is OFF
OFF
• After RUN, ON for 1 scan only.
• This connection can be used for scan execution type
programs only.
• When an initial execution type program is used, this
relay turns OFF at the END processing of the scan
ON
1 scan
execution type program in the first scan after RUN.
OFF
ON
OFF
type program
• After RUN, OFF for 1 scan only.
• This connection can be used for scan execution type
programs only.
• When an initial execution type program is used, this
relay turns OFF at the END processing of the scan
ON
execution type program in the first scan after RUN.
1 scan
OFF
ON
OFF
• After RUN, ON for 1 scan only.
ON
• This connection can be used for low speed execution
1 scan
OFF
type programs only.
• After RUN, OFF for 1 scan only.
ON
• This connection can be used for low speed execution
1 scan
OFF
type programs only.
0.05s
0.05s
• Repeatedly changes between ON and OFF at each
designated time interval.
0.1s
• When PLC power supply is turned OFF or a CPU
0.1s
module reset is performed, goes from OFF to start.
(Note that the ON-OFF status changes when the
0.5s
0.5s
designated time has elapsed during the execution of
the program.)
1s
1s
• This relay alternates between ON and OFF at
intervals of the time (unit: s) specified in SD414.
• When PLC power supply is turned OFF or a CPU
ns
module reset is performed, goes from OFF to start.
ns
(Note that the ON-OFF status changes when the
designated time has elapsed during the execution of
the program.)
• Relay repeats ON/OFF switching at fixed scan
intervals.
• When PLC power supply is turned ON or a CPU
module reset is performed, goes from OFF to start.
• The ON/OFF intervals are set with the DUTY
instruction
n2 scan n2 scan
n1: ON scan interval
n2: OFF scan interval
n1 scan
• For use with SM420 to SM424 low speed programs
Explanation
Initial 1 scan of scan
execution execution type
program
Initial 1 scan of scan
execution execution type
type program program
DUTY n1 n2 SM420
App - 53
Corres-
ponding
Set by Corresponding
(When Set) ACPU
M9
S (Every END
M9036
processing)
S (Every END
M9037
processing)
S (Every END
M9038
processing)
S (Every END
M9039
processing)
S (Every END
New
processing)
S (Every END
New
processing)
M9030
M9031
S (Status change)
M9032
M9033
M9034form
S (Status change)
at change
M9020
M9021
S (Every END
M9022
processing)
M9023
M9024
S (Every END
New
processing)
CPU
QnA
QnA
QnA
QnA
QnA
QnA
QnA
QnA
QnA
QnA
QnA
QnA
QnA