Advant
®
Controller 450 User’s Guide
Section 5.5.16 System Restart, INIT
3BSE 002 415R701 Rev A 5-83
3. Check LED BC on the processor module. It should light indicating backup voltage for
RAM connected.
4. Switch on the mains supply.
5. The controller will be in OPERATION mode within a few minutes. This is indicated by P1
on the processor module character display. If any start program in the application program,
the controller operation will restart accordingly.
Cold Start
If for some reason the RAM content has been erased, or if severe software disturbances are
indicated, restoring of the system configuration and the application program is required.
A suitable backup must be available. The way of performing a loading of a backup depends on
the type of backup. See example and further information in Section 5.5.17, Loading of
Application Program.
5.5.16 System Restart, INIT
If the controller has stopped due to a software error it is always possible and most often
desirable to try a restart.
A processor module which has stopped indicate HLT and a certain halt code. This information
and, if any, system messages available in the computer disappears after a restart (or after they
have been read by any engineering tool!
1. Make a note of the halt code indicated on the processor module character display
2. If an engineering station is available and you have the time and knowledge proceed as
follow:
a. Set the mode selector on the processor module in position 4 (OFFLINE). Depress the
ENTER button.
b. Connect the engineering tool to the processor module in off-line symbolic mode.
A printer should be connected to the tool.
c. Use the commands LSYSHI (List SYStem HIstory), LSYSM ALL (List SYStem
Messages ALL), LTSL (List Task Switch Log) and list all messages.
d. The information from the listing is used in the continued contact with ABB.
e. Set the mode selector back to position 1 (AUTO).
3. Depress the ENTER button
4. If the initialization is successful, the controller will be in OPERATION mode within a few
minutes. This is indicated by P1 on the processor module character display.
5. If HALT again, other measures must be taken, see Section 5.5.17, Loading of Application
Program.