Table Of Fatal Errors - Omron CJ2 CPU UNIT User Manual

Cj2 cpu unit hardware
Hide thumbs Also See for CJ2 CPU UNIT:
Table of Contents

Advertisement

Appendices

Table of Fatal Errors

• The table of fatal errors is arranged in ascending order of error codes.
• When two or more errors occur at the same time, the error code of the more serious error will be
recorded in A400.
• If the IOM Hold Bit hasn't been turned ON to protect I/O memory, all nonretained areas of I/O memory
will be cleared when a fatal error other than FALS(007) occurs.
• If the IOM Hold Bit is ON, the contents of I/O memory will be retained but all outputs will be turned OFF.
Error
Error flag
Error
code (in
(Auxiliary
A400)
Cycle Time
0x809F
A401.08: Cycle
Exceeded
Time Exceeded
Error
Flag
I/O Bus Error
0x80C0 to
A401.14: I/O
0x80C7,
Bus Error Flag
0x80CE,
or 0x80CF
*1 A404.00 to A404.07 contain the error slot number (00 to 09) in binary. "0F hex" indicates that the slot cannot be deter-
mined.
"0B hex" indicates a bus error occurred for the built-in EtherNet/IP port.
"0E hex" indicates the End Cover is not connected to the CPU Rack or an Expansion Rack.
*2 The maximum processing time for an interrupt task will not be stored in A440 if High-speed interrupt function is enabled in
the PLC Setup.
A-104
Flag and
word data
Area)
---
The cycle time has exceeded the
maximum cycle time (watch cycle
time) set in the PLC Setup.
A404: I/O Bus
Error has occurred in the bus line
Error Slot and
between the CPU and I/O Units or
Rack Num-
the End Cover is not connected to the
bers
CPU Rack or an Expansion Rack.
A404.08 to A404.15 contain the error
rack number (00 to 03) in binary. 0F
hex indicates that the rack cannot be
determined.0E hex indicates the End
Cover is not connected to the CPU
Rack or an Expansion Rack.
Probable cause
Change the program to reduce the cycle time or
change the maximum cycle time setting. Check the
Maximum Interrupt Task Processing Time in A440
and see if the Cycle Time Watch Time can be
changed.
ing unused parts of the program into tasks, jumping
unused instructions in tasks, and disabling cyclic
refreshing of Special I/O Units that don't require fre-
quent refreshing.
Try turning the power OFF and ON again. If the error
isn't corrected, turn the power OFF and check cable
connections between the I/O Units and Racks and
*1
the End Covers. Check for damage to the cable or
Units. Turn the Rack's power supply OFF and then
ON again.
CJ2 CPU Unit Hardware User's Manual
Possible remedy
*2
The cycle time can be reduced by divid-

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents