3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.6 Operation Processing during Momentary Power Failure
3 - 69
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
(2) When momentary power failure occurs for a period longer than the
permitted power failure time
CPU module starts initially.
The same operation processing as that after the following operation occurs.
• Power ON
• Resetting using RESET/L. CLR switch (RUN/STOP/RESET switch in the case of
the Basic model QCPU and Universal model QCPU)
• Remote setting using GX Developer
POINT
1. In the redundant power supply system, operation is not suspended if a
momentary power failure occurs in either of the power supply modules, while it
is suspended if a momentary power failure occurs under the condition where
the power was supplied to only one of them.
2. The information of a momentary power failure for the redundant power supply
system is stored in SM1782 to 1783 and SD1782 to 1783.
The information of a momentary power failure for not redundant power supply
system is stored in SM53 and SD53. ( Appendix 1, Appendix 2)
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