GE PACSystems RX7i Reference Manual

Chapter 4. CPU Operation
154 PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual GFK-2222AD
4.7 Logic/Configuration Source and CPU Operating Mode at
Power-Up
Flash and user memory can contain different values for the Logic/Configuration Power-up Source
parameter. The following tables summarize how these settings determine the logic/configuration source
after a power cycle. CPU mode is affected by the Power-up Mode, the RUN/STOP Switch and Stop-Mode
I/O Scanning parameters, the physical RUN/STOP Mode Switch position, and the Power Down Mode as
shown in sections 4.7.1 and 4.7.2.
Before Power Cycle
After Power Cycle
Logic/Configuration
Power-up Source
in Flash
Logic/Configuration
Power-up Source in RAM
Origin of
Logic/Configuratio
n
CPU Mode
Always Flash
Memory not preserved
(i.e. no battery/Energy Pack,
or memory corrupted)
Flash
See CPU Mode when Memory Not
Preserved/Power-up Source is
Flash.
Always Flash
No configuration in RAM,
memory
preserved
Flash
See CPU Mode when Memory
Preserved.
Always Flash
Always Flash
Flash
Always Flash
Conditional Flash
Flash
Always Flash
Always RAM
Flash
Conditional Flash
Memory not preserved
(i.e. no battery/Energy Pack
or memory corrupted)
Flash
See CPU Mode when Memory Not
Preserved/Power-up Source is
Flash.
Conditional Flash
No configuration in RAM,
memory
preserved
Uses default
logic/configuration
Stop Disabled
Conditional Flash
Always Flash
RAM
See CPU Mode when Memory
Preserved.
Conditional Flash
Conditional Flash
RAM
Conditional Flash
Always RAM
RAM
Always RAM
Memory not preserved
(i.e. no battery/Energy Pack,
or memory corrupted)
Uses default
logic/configuration
Stop Disabled
Always RAM
No configuration in RAM,
memory
preserved
Uses default
logic/configuration
Stop Disabled
Always RAM
Always Flash
Flash
See CPU Mode when Memory
Preserved.
Always RAM
Conditional Flash
RAM
Always RAM
Always RAM
RAM
No Configuration in
Flash
Memory not preserved
(i.e. no battery/Energy Pack,
or memory corrupted)
Uses default
logic/configuration
Stop Disabled
No Configuration in
Flash
No configuration in RAM,
memory preserved
Uses default
logic/configuration
Stop Disabled
No Configuration in
Flash
Always Flash
RAM
See CPU Mode when Memory
Preserved.
No Configuration in
Flash
Conditional Flash
RAM
No Configuration in
Flash
Always RAM
RAM

GE PACSystems RX7i Specifications

General

Brand	GE
Model	PACSystems RX7i
Category	Controller
Language	English