Omron CS1W-213 - REV 02-2008, Operation Manual

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LED Error Indicators Section 11-3
❍ ● ❍ ● ● ● ● ● ●
CPU error The CPU Unit has stopped
because the watchdog timer
turned ON. Check that the Backplane,
CPU Unit, and PCU are all
mounted securely, and reset
the power supply.
If the same error occurs
repeatedly, replace the
Backplane, CPU Unit, or
PCU.
A CPU bus error has been
detected.
The CPU Unit did not per-
form END refresh process-
ing within the cyclic service
monitor time. In the system settings for
the CPU Unit, check that the
END refresh has not been
disabled. If it has been dis-
abled, enable it, and reset
the power supply.
Increase the CPU Unit’s
cycle monitor time, and
reset the power supply
again.
Even if this error is detected,
it will not affect PCU opera-
tion. Also, once END refresh
is enabled, the ERH LED
indicator will turn OFF.
A fatal error occurred in the
CPU Unit. Remove the cause of the
error at the CPU Unit. Once
the cause is removed, nor-
mal status will be restored,
and the ERH LED indicator
will turn OFF.
❍ ❍ ● ✩ ✩ ✩ ● ● ●
Parameters
destruction When using the axis param-
eters saved in the PCU, the
parameters saved in flash
memory have been lost. It is
possible that, while saving to
flash memory, the PCU’s
power supply was inter-
rupted, there was noise, or
there was an error in flash
memory. In this condition, only the
data transfer (read and
write) and data save opera-
tions can be performed. The
PCU’s axis parameters and
data are all returned to their
default values. After trans-
ferring the parameters again
for all axes, save the param-
eters and either reset the
power supply or restart the
PCU. If the error persists,
replace the PCU.
❍ ❍ ● ✩ ✩ ● ● ● ●
Data destruction The following data saved in
flash memory has been lost:
Zones, positioning
sequences, speeds, accel-
eration/deceleration times,
positions, dwell times.
It is possible that, while sav-
ing to flash memory, the
PCU’s power supply was
interrupted, there was noise,
or there was an error in flash
memory.
LED Error Cause Remedy
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