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Status Area and Troubleshooting Section 9-2
Other Status
Bit status Probable cause Probable remedy
Error log exists (CIO 1500
+ 25 × n, bit 15) is 1: ON
Error information on the
Controller Link Unit (an
error log) has been
recorded.
Using the Controller Link
Support Software or an
FINS command, read the
cause of the current error.
Alternatively, use past error
log records to troubleshoot
the problem.
Communications controller
send error (CIO 1500 + 25
× n, bit 11) is 1: ON
The Controller Link Unit is
faulty.
Replace the Controller Link
Unit.
Inconsistent network
parameters (CIO 1500 +
25 × n, bit 10) is 1: ON
Indicates that the network
parameters recorded in the
CPU Unit’s EEPROM differ
from the values of the Net-
work in use.
Check the network param-
eters on the Network in
use using the Controller
Link Support Software, and
reset necessary parame-
ters.
Node address duplicate
setting error (CIO 1500 +
25 × n, bit 9) is 1: ON
The same node address
has been used more than
once.
Reset so that each node
address is used only once
within the same Network.
EEPROM error (CIO 1500
+ 25 × n, bit 7) is 1: ON
An error has occurred
while writing data to the
CPU Unit’s EEPROM.
Check the status of bits 00
to 02 in (CIO 1500 + 25 ×
n, and correct any prob-
lems found. If the error
occurs again, replace the
CPU Unit.
PLC system setting error
(CIO 1500 + 25 × n, bit 3)
is 1: ON
The CPU Unit’s EEPROM
data is damaged.
Check the status of bits 00
to 02 in (CIO 1500 + 25 ×
n, and correct any prob-
lems found. If the error
occurs again, replace the
CPU Unit.
The PLC is protected. Set the PLC’s protect
switch to OFF.
Routing table error
(CIO 1500 + 25 × n, bit 2)
is 1: ON
The routing table data
within the CPU Unit’s
EEPROM is damaged.
Refer to 7-4 Setting Rout-
ing Tables and reset the
routing tables correctly. If
the error occurs again,
replace the Controller Link
Unit.
There is an error in the
routing table setting.
When using a routing
table, refer to 7-4 Setting
Routing Tables and reset
the routing tables correctly.
If no routing tables are
being used, delete the
tables.