28 FUNCTIONS
28.4 Memory Copy from Control System to Standby System
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28
• When the control system power supply and the standby system power supply are simultaneously turned on,
the automatic memory copy is not executed.
• The standby system CPU module does not operate in boot operation using an SD memory card, but
operates based on the files copied by the automatic memory copy function. However, when the automatic
memory copy cannot be executed due to a communication error or other causes at power-on or reset of the
standby system CPU module, the standby system CPU module operates with the files transferred by the
boot operation.
Execution procedure
1.
When the operation mode is the separate mode, switch it to the backup mode. (
Page 438 Operation Mode Change)
2.
Turn off and on or reset the standby system CPU module. The system executes the memory copy. During the memory
copy, the MEMORY COPY LEDs of the redundant function modules in both systems flash (at 200ms intervals).
3.
The standby system CPU module is automatically reset and restarted, and the memory copy is completed. The
MEMORY COPY LEDs of both systems turn off.
Memory copy with the engineering tool
The following describes the execution procedure of memory copy using the engineering tool.
Execution procedure
1.
Connect the engineering tool to the control system CPU module.
2.
Open the "Redundant Operation" window of the engineering tool.
[Online]
[Redundant PLC Operation]
[Redundant Operation]
3.
Select "Memory Copy" in the "Redundant Operation" window and click [Execute]. During the memory copy, the
MEMORY COPY LEDs of the redundant function modules in both systems flash (at 200ms intervals).
4.
When the memory copy is completed, the MEMORY COPY LED of the control system turns off and that of the standby
system turns on.
5.
Turn off and on or reset the standby system CPU module. The MEMORY COPY LED of the standby system turns off.
Control system
Standby system
Control system
Standby system
Control system
Standby system
Control system
Standby system
Control system
Standby system
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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