227
Troubleshooting Using Indicators
Section 9-1
Lit
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Lit
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Routing table setting error
or a Routing Table Enable/
Disable Bit setting error.
Remake and set the rout-
ing table correctly, referring
to 7-4 Setting Routing
Tables. When no routing
table is being used, set the
Routing Table Enable/Dis-
able Bit to OFF.
The Unit is mounted to a
non-compatible PC.
Refer to 1-2-4 Controller
Link Unit Models and PCs
and reinstall the Unit on
the appropriate PC.
An error has occurred in
the PC.
Refer to the PC’s operation
manual and correct the
error. If the error occurs
again, replace the PC.
EEPROM error
Refer to 9-2 Status Area
and Troubleshooting, cor-
rect the data where the
error has occurred, and
reset the Unit. If the error
occurs again, replace the
Controller Link Unit.
The unit number is not set
in the range from 0 to 15.
Reset the Unit number to
within a range of 0 to 15.
The same unit number is
set more than once for the
same PC.
Reset so that each unit
number is set only once
within the same PC
(including the Expansion
CPU Backplane.)
I/O tables have not been
created for the PC or they
are faulty.
Create I/O tables for the
PC correctly.
Indicators
Probable cause
Probable remedy
RUN
ERC
ERH
INS
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