Download SECTION 7 Errors and Alarm Troubleshooting

Section
Errors and Alarm Troubleshooting
7-1
Errors that occur during initial processing (at CPU Unit power ON or restart of the Loop Control Unit)
LED
RUN
ERH
ERC
Out
Lit
Out
Item
Unit
number
setting
error
State
1) The same unit
All functions
number has been
stopped
specified twice or
more on the same
CPU Unit.
2) The unit number is
not registered to CPU
Unit I/O table.
3) Failed to recognize
the CPU Unit
Error code
(stored as
Remedy
error log data)
None
1) Set the correct unit
number, and turn the
power back ON again.
0006 detailed 2) Prepare an I/O table.
code: 0800
None
4) Error occurred during
initial processing on
CPU Unit.
Initial
Failed to recognize the All functions
recognition CPU Unit
stopped
error
000F
All functions
stopped
None
All functions
stopped
None
Out
Lit
Lit
Out
Out
Lit
Unit error
Out
Out
Out
Power
supply
failure
Lit
Function
block
database
error
(not
(not
related) related)
Cause
Hardware malfunction
such as memory
malfunction was
detected during the selfdiagnostic test.
1) The correct internal
power is not being
supplied to the Loop
Control Unit.
None
3) Replace the Loop
Control Unit if ERH lights
even if mounted on a
different CPU Unit.
4) Refer to the CPU Unit
Operation Manual.
Replace the Loop Control
Unit if ERH/ERC light even
if mounted on a different
CPU Unit.
Replace the Loop Control
Unit if ERC lights even if
mounted on a different
CPU Unit.
1) Check the power
voltage, and supply the
correct power. Or, check
the total current
consumption of the PC.
2) The unit is not
2) Firmly fix the Loop
properly fixed to the
Control Unit on the
Backplane.
Backplane.
3) The unit is
3) Replace the Loop
malfunctioning.
Control Unit if LED goes
off even if mounted on a
different CPU Unit.
1) Drop in internal
All functions 0331
1) Check the battery
battery power voltage stopped
Detailed code:
connection. If the
or battery not
Running
Block
connection is normal,
mounted (Only when stopped
address.
replace the battery.
DIP switch pin 2 is
FFFF
Then execute
OFF)
indicates that
initialization using CXthe entire
Process Tool.
2) Data corruption
In the case of database is in 2) Set the data again to
caused by noise
only a partial error.
the function block in
error, running
question using CXis stopped
Process Tool.
only at the
function block
in question.
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