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Operating the Controller - CPU 41x-2 PCI
Indicator
RUN
flashing
2 Hz
flashing
0.5 Hz
flashing
2 Hz
off
off
4.5.1
Corrective Action if the STOP Indicator is Flashing Slowly
If the STOP indicator flashes slowly, the controller requires a memory reset
(MRES). To recover from this condition, you must use the MRES command to
reset the controller.
4.5.2
Corrective Action if All Status Indicators are Flashing
If all of the status indicators are flashing at the same time, the controller is in a
defective state and has encountered an error condition that cannot be fixed by
resetting the memory with the MRES command. To recover from this condition, you
must perform the following steps:
1. Power off the controller.
2. Power on the controller. The STOP indicator flashes with the RUN indicator off.
3. Use the MRES command to reset the memory.
4. Use STEP 7 to download the control program and system configuration, or to
restore an archived control program.
5. If either powering off or restarting the controller does not resolve the problem,
you may need to reboot your computer.
66
Description
STOP
flashing
The controller is in DEFECT mode. All status indicators are
2 Hz
flashing (see Corrective Action if All Status Indicators are
Flashing).
on
The STEP 7 user program halted at a breakpoint.
on
A warm restart or hot restart is in progress. The RUN indicator
continues to flash until the restart completes. The time required
for the restart operation depends on the time required to
execute the startup OB.
flashing
The controller must be reset (MRES, see Corrective Action if
0.5 Hz
the STOP Indicator is Flashing Slowly).
flashing
A memory reset (MRES) is being performed, see Corrective
2 Hz
Action if the STOP Indicator is Flashing Slowly.
Hardware Installation and Operating Manual, Edition 02/2006, A5E00273194-02
Windows Automation Center, WinAC Slot Version 4.0
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