Emerson PACSystems RX3i - Page 110

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 4
GFK-2222AK October 2019
CPU Operation 102
Table 4-2: PLC Operation Categorized by PLC Privilege Level
PLC Operations
PLC mode
PLC Privilege Level
Level 1
Level 2
Level 3
Level 4
Write to Data
Memory
RUN
No
Yes
Yes
Yes
STOP
No
Yes
Yes
Yes
Read from Data
Memory
RUN
Yes
Yes
Yes
Yes
STOP
Yes
Yes
Yes
Yes
Discrete I/O override
RUN
No
No
Yes
Yes
STOP
No
No
Yes
Yes
RUN/STOP transitions
RUN
No
Yes
Yes
Yes
STOP
No
Yes
Yes
Yes
Verify Logic
RUN
Yes
Yes
Yes
Yes
STOP
Yes
Yes
Yes
Yes
Verify Configuration
RUN
Yes
Yes
Yes
Yes
STOP
Yes
Yes
Yes
Yes
Read Fault tables
RUN
Yes
Yes
Yes
Yes
STOP
Yes
Yes
Yes
Yes
Clear fault tables
RUN
No
Yes
Yes
Yes
STOP
No
Yes
Yes
Yes
Addition of program
logic
RUN
No
No
No
Yes
STOP
No
No
Yes
Yes
Deletion of program
logic
RUN
No
No
No
Yes
STOP
No
No
Yes
Yes
Download Logic
RUN
No
No
No
Yes
STOP
No
No
Yes
Yes
Download
Configuration
RUN
No
No
No
Yes
STOP
No
No
Yes
Yes