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6 RAS FUNCTIONS
6.5 Program Cache Memory Auto Recovery Function
Precautions
Clearing the event history during execution of another function
No event history can be cleared during execution of the following functions. Check that the following functions are not being
executed and then clear the event history.
• CPU module data backup/restoration function
• iQ Sensor Solution data backup/restoration function
Reading the event history during execution of another function
No event history can be read during execution of the following function. Check that the following function is not being
executed and then read the event history.
• CPU module data restoration function
6.5
Program Cache Memory Auto Recovery Function
If the contents of memory of the CPU module have been rewritten by itself due to the factors such as excessive electrical
noise, the program cache memory recovers the corresponding areas automatically during the run of the program. This
function becomes active with RUN state of the CPU module and works during the run of the program. No special settings are
required as the system performs this task automatically.
RnCPU RnENCPU
RnSFCPU RnSFCPU
RnPSFCPU RnPSFCPU
RnPCPU
RnPCPU
(Standard)
(Safety)
(Standard)
(Safety)
(Redundant)
(Process)
Summary of Contents for MELSEC iQ-R-R00CPU
Page 2: ......
Page 151: ...9 MONITOR FUNCTION 9 1 Real Time Monitor Function 149 9 MEMO ...
Page 323: ...18 SEQUENCE SCAN SYNCHRONIZATION SAMPLING FUNCTION 321 18 MEMO ...
Page 330: ...328 20 ROUTING SETTING 20 3 Precautions MEMO ...
Page 423: ...26 BASIC CONCEPT 26 8 State Transition of the Redundant System 421 26 MEMO ...
Page 1014: ...1012 APPX Appendix 15 Added and Enhanced Functions MEMO ...
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