Allen-Bradley MicroLogix 1400 Instruction Manual page 561

efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive
ATTENTION
!
Future Access (OEM Lock)
Address Data Format
S:1/14 binary
When this bit is set (1), it indicates that the programming device must
have an exact copy of the controller program.
SeeAllow Future Access Setting (OEM Lock) on page 52 for more
information.
First Scan Bit
Address Data Format
S:1/15 binary
When the controller sets (1) this bit, it indicates that the first scan of the
user program is in progress (following entry into an executing mode). The
controller clears this bit after the first scan.
.
NOTE
STI Mode
STI Pending
(1)
Address
S:2/0
(1) This bit can only be accessed via ladder logic. It cannot be accessed via communications (such as a Message
instruction from another device).
This address is duplicated at STI:0/UIP. SeeUsing the Selectable Timed
Interrupt (STI) Function File on page 318 for more information.
If you clear the Major Error Halted bit (S:1/13) when the controller mode
switch is in the RUN position, the controller immediately enters the RUN
mode.
Range
0 or 1
Range
0 or 1
The First Scan bit (S:1/15) is set during execution of the start-up protection
fault routine. Refer to S:1/9 for more information.
Data Format Range
binary 0 or 1
System Status File
Type User Program Access
status read only
Type User Program Access
status read/write
Type User Program Access
status read only
Publication 1766-RM001A-EN-P - October 2008
559