Stop-To-Run Mode Transition; Run/Stop Switch Operation - GE PACSystems RX7i Reference Manual

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Chapter 4. CPU Operation

4.5.2 STOP-to-RUN Mode Transition

The CPU performs the following operations on Stop-to-Run transition:
Validation of sweep mode and program scheduling mode selections
Validation of references used by programs with the actual configured sizes
Re-initialization of data areas for external blocks and standalone C programs
Clearing of non-retentive memory

4.5.3 RUN/STOP Switch Operation

The RUN/STOP Switch is a 3-position switch which operates as follows:
Switch Position
RUN I/O or
RUN I/O Enable
RUN or
RUN Output Disable
STOP
The RUN/STOP Switch can be disabled in the programming software HWC. The memory protection
function of the switch can be disabled separately in HWC. The RUN/STOP Switch is enabled by default.
The memory protection functionality is disabled by default.
The Read Switch Position (Switch_Pos) function allows the logic to read the current position of the
RUN/STOP Switch, as well as the mode for which the switch is configured. For details, refer to
PACSystems RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual, GFK-2950 Chapter 4.
152
CPU and Sweep Mode
The CPU runs with I/O sweep enabled.
The CPU runs with outputs disabled.
The CPU is not allowed to go into RUN Mode.
PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual
Memory Protection
User program memory is read only.
User program memory is read only.
User program memory can be written.
GFK-2222AD

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