2 CPU MODULE OPERATION PROCESSING
2.2 Operation Processing When Operating Status Is Changed
89
2
Output mode at operating status change (STOP to RUN)
When the operating status changes from RUN to STOP, for example, the CPU module internally stores the status of the
outputs (Y) to turn them all off.
Operation when the operating status is changed from STOP to RUN
Select whether or not to resume from the previous output status when the operation status of the CPU module is changed
from STOP to RUN by using a holding circuit.
■
Outputting the output (Y) status before STOP
The program operation is resumed after outputting the output (Y) status immediately before the operating status of the CPU
module is changed to the STOP state. If the output (Y) is forcibly turned on in the STOP state, the status prior to the STOP
state is output. If the output (Y) was off before entering the STOP state, the status when it was on is not retained. In the
following figure, X20 represents the start button, X21 represents the stop button, and Y represents an output.
■
Clearing the output (Y) (output after one scan)
All outputs are turned off, and the output (Y) is output after the program operations are executed. If the output (Y) is forcibly
turned on when the operating state is STOP, the ON state is retained. In the following figure, X20 represents the start button,
X21 represents the stop button, and Y represents an output.
• When using a SIL2 Process CPU, refer to the following as well.
• When using a Safety CPU, refer to the following as well.
RnCPU RnENCPU
RnSFCPU RnSFCPU
RnPSFCPU RnPSFCPU
RnPCPU
RnPCPU
(Standard)
(Safety)
(Standard)
(Safety)
(Redundant)
(Process)
ON
OFF
OFF
ON
OFF
X21
Y0
X20
RUN→STOP
STOP→RUN
X21
Y0
X20
RUN→STOP
STOP→RUN
ON
OFF
ON
OFF
OFF
Содержание MELSEC iQ-R-R00CPU
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Страница 151: ...9 MONITOR FUNCTION 9 1 Real Time Monitor Function 149 9 MEMO ...
Страница 323: ...18 SEQUENCE SCAN SYNCHRONIZATION SAMPLING FUNCTION 321 18 MEMO ...
Страница 330: ...328 20 ROUTING SETTING 20 3 Precautions MEMO ...
Страница 423: ...26 BASIC CONCEPT 26 8 State Transition of the Redundant System 421 26 MEMO ...
Страница 524: ...522 30 MAINTENANCE AND INSPECTION FOR A REDUNDANT SYSTEM 30 1 Module Replacement in the Redundant System MEMO ...
Страница 1009: ...APPX Appendix 14 List of Available SQL Commands for CPU Module Database Access Function 1007 A MEMO ...
Страница 1014: ...1012 APPX Appendix 15 Added and Enhanced Functions MEMO ...
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