Allen-Bradley MicroLogix 1200 Reference Manual page 365

Fault Override At Power-Up
Address Data Format
S:1/8 binary
When set (1), causes the controller to clear the Major Error Halted bit (S:1/
13) at power-up. The power-up mode is determined by the controller
mode switch (MicroLogix 1500 only) and the Power-Up Mode Behavior
Selection bit (S:1/12).
See also: FO - Fault Override on page 3-7.
Startup Protection Fault
Address Data Format
S:1/9 binary
When set (1) and the controller powers up in the RUN or REM RUN
mode, the controller executes the User Fault Routine prior to the
execution of the first scan of your program. You have the option of
clearing the Major Error Halted bit (S:1/13) to resume operation. If the
User Fault Routine does not clear bit S:1/13, the controller faults and does
not enter an executing mode. Program the User Fault Routine logic
accordingly.
When executing the startup protection fault routine, S:6
NOTE
(major error fault code) contains the value 0016H.
Load Memory Module On Error Or Default Program
Address Data Format
S:1/10 binary
For this option to work, you must set (1) this bit in the control program
before downloading the program to a memory module. When this bit it
set in the memory module and power is applied, the controller
downloads the memory module program when the control program is
corrupt or a default program exists in the controller
.
If you clear the controller memory, the controller loads
NOTE
the default program.
The mode of the controller after the transfer takes place is determined by
the controller mode switch (MicroLogix 1500 only) and the Power-Up
Mode Behavior Selection bit (S:1/12).
See also: LE - Load on Error on pa ge3-8.
Range Type
0 or 1 control
Range Type
0 or 1 control
Range Type
0 or 1 control
System Status File C-5
User Program Access
read only
User Program Access
read only
User Program Access
read only
Publication 1762-RM001C-EN-P