11-3
Section
LED Error Indicators
285
The status of the LED indicators on the front of the PCU can be used to diagnose
errors as shown in the following table. The status of the indicators is as follows:
f
: ON
l
: Flashing
F
: OFF
---:
S
When a data error or an external sensor input error occur, the indicator for
the corresponding axis will flash.
S
In normal operation, the indicator will be lit during pulse output, and be unlit
while pulse output is stopped.
LED
Error
Cause
Remedy
R
U
N
E
R
C
E
R
H
S
E
N
S
D
A
T
A
X
Y
Z
U
y
F
F
F
F
F
F
F
F
F
PC power supply
OFF
The PC’s power supply is
OFF.
Turn ON the PC’s power
supply.
Not mounted to
Backplane
The PCU is not mounted
securely to the PC
Backplane.
Mount the PCU to the
Backplane securely.
Watchdog timer
error
The watchdog timer for the
PCU turned ON.
Mount the PCU to the
Backplane securely and
reset the power supply.
CPU Unit power
interruption
An interruption in the power
supply was detected at the
CPU Unit.
Remove the cause of the
power interruption and
reset the power supply.
F
F
f
F
F
F
F
F
F
Setting error
The unit number set for the
PCU is outside the
acceptable range.
Set the unit number for
each of the Units to a
setting within the
acceptable range, reset the
power supply, and create
an I/O table from the CPU
Unit.
The unit number set for the
PCU is the same as the
unit number set for another
Unit (unit number
duplication).
Change the unit number
setting, reset the power
supply, and create an I/O
table from the CPU Unit.
I/O table has not been
created.
Create an I/O table from
the CPU Unit.
Communications with the
CPU Unit are not possible.
Mount the Unit to the
Backplane securely.
F
f
F
F
F
F
F
F
F
PCU error
Unexpected operation
occurred at the PCU.
Replace the PCU.
F
f
f
F
F
F
F
F
F
Unit type error
There is a fault in a
component of an I/O card
or bus ASIC in the PCU.
Replace the PCU.
F
f
F
f
f
F
F
F
F
System software
error
The system software for the
Unit has been destroyed.
Replace the PCU.
F
f
F
f
f
f
F
F
F
RAM error
There is a fault in the
PCU’s RAM.
Replace the PCU.
Summary of Contents for CS1W-NC113 - REV 02-2008
Page 1: ...CS1W NC113 213 413 133 233 433 Position Control Units ...
Page 2: ...iv ...
Page 4: ...vi ...
