Programmer (HHP) User guide

Chapter 20
T roubleshooting Y our System
20–13
Controller Fault Messages
This section contains controller fault messages that the MicroLogix 1000
HHP may display during operation. Refer to page B–9 for a listing of
recoverable and non-recoverable faults.
Fault Code
(Hex)
Advisory Message Description Recommended Action
0001 DEFAULT LOADED The default program is loaded to
the controller memory. This
occurs:
 on power up if the power down
occurred in the middle of a
program save or a memory
module load
 if the user program is corrupt at
power up
1. Re-save or re-load the
program and enter the
RRUN, RCSN, or RSSN
mode.
2. Contact your local
Allen-Bradley representative
if the error persists.
0002 UNEXPECTED RESET The controller was unexpectedly
reset due to a noisy environment
or internal hardware failure. If the
user program previously saved in
the controller or loaded from the
memory module is valid, the data
previously saved in the controller
or loaded from the memory module
with the program is used. The
Retentive Data Lost Bit (S5/8) is
set. If the user program is invalid,
the default program is loaded.
1. Refer to proper grounding
guidelines in chapter 2.
2. Contact your local
Allen-Bradley representative
if the error persists.
0003 PROG CORRUPTED While power cycling to your
controller, a noise problem may
have occurred. The user program
is corrupt and the default program
is loaded.
1. Try cycling power again.
Your program may be valid,
but retentive data is lost.
2.
Re-save or re-load your
program.
3. Contact your local
Allen-Bradley representative
if the error persists.
0004 PROGRAM CHANGED While the controller was in the
RUN mode or any test mode, the
ROM or RAM became corrupt. If
the user program is valid, the
program and initial data previously
saved in the controller or loaded
from the memory module is used
and the Retentive Data Lost Bit
(S5/8) is set. If the user program is
invalid, error 0003 occurs.
1. Cycle power on your unit.
2.
Re-save or re-load your
program and re-initialize any
necessary data.
3. Start up your system.
4. Contact your local
Allen-Bradley representative
if the error persists.
0005 RETENT DATA LOST The data files (input, output, timer,
counter, integer, binary, control,
and status) are corrupt.
1. Cycle power on your unit.
2.
Re-save or re-load your
program and re-initialize any
necessary data.
3. Start up your system.
4. Contact your local
Allen-Bradley representative
if the error persists.