Omron CJ1W-EIP21 - 10-2010 Operation Manual page 379

Using the LED Indicators and Display for Troubleshooting
Errors Related to the CPU
Unit
Indicator
MS NS 7-segment
Flashing --- HH
red
--- --- ---
Errors Related to the
Control Bits
Indicator
MS NS 7-segment
--- --- C6
The 7-segment display alternates between the node address and error code.
Error Cause
CPU Unit A fatal error
Fatal Error occurred in the
CPU Unit.
Output OFF An Output OFF
Error (output inhibit)
condition
occurred in the
CPU Unit.
The 7-segment display alternates between the node address and error code.
Error Cause
Multiple Two or more
Switches ON software
switches were
ON simulta-
neously, or a
second soft-
ware switch was
turned ON
before a prior
operation was
completed.
Unit operation (Flag Error
status) log
(hex)
• If the Unit is the orig- 0015
inator of the tag data
link connection, it
stops communica-
tions.
• If the Unit is the tar-
get of the tag data
link connection and
the PLC status is
included in the com-
munications data,
the corresponding
Target Node PLC
Error Flag will be
turned ON.
The tag data link's ---
send data will be
cleared to 0 in accor-
dance with the Output
OFF settings, and
data transfer will con-
tinue with that data.
Unit operation (Flag Error
status) log
(hex)
The error code will be ---
displayed on the 7-
segment display for
30 seconds, and the
Multiple Switches ON
Error Flag (n+11, bit
14) will go ON.
The error display will
be cleared the next
time that a settings
operation is com-
pleted normally.
Section 14-2
Countermeasure
Eliminate the
cause of the error
in the CPU Unit.
The tag data link
will restart auto-
matically when the
cause of the error
is eliminated.
Turn OFF the CPU
Unit's Output OFF
Bit (A50015). The
tag data link's send
data will be
restored automati-
cally when this bit
is turned OFF.
Countermeasure
Execute control bit
operations one at a
time.
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