Chapter

4

Normal Operation

his chapter discusses:

Powerup of a Redundant CPU

Resynchronization of the Redundant CPU

GHS Control Strategy

GDB Control Strategy

%S References for CPU Redundancy Scan Synchronization

Switching Control to the Backup unit

RUN Disabled Mode

Background User Checksum and Background Window Timing Instructions Miscellaneous Operation Information

TGenius Bus Controller Switching

Ethernet Global Data in a Redundancy CPU

GFK-1527A

4-1

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GE 90-70 manual Normal Operation