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16
TROUBLESHOOTING
16.3 Actions to be Taken When the ERR. LED is On or Flashing
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(To the next page)
Error code
Error details and cause
Corrective action
1401
• In the initial processing, no response returns from an intelligent
function module.
• The buffer memory size of an intelligent function module is incorrect.
• An unsupported module is mounted.
When unsupported module is mounted, remove the module.
If the module is supported, a hardware failure may have occurred in
the C Controller module, base unit, or the access target intelligent
function module. Please consult your local Mitsubishi service center or
representative, explaining the details of the problem.
1403
• An unsupported module is mounted.
• An intelligent function module error was detected. (Handshake error)
• An I/O module (including intelligent function modules and special
function modules) is being removed, was removed. or mounted
during operation.
When unsupported module is mounted, remove the module.
If the module is supported, a hardware failure may have occurred in
the C Controller module, base unit, or the access target intelligent
function module. Please consult your local Mitsubishi service center or
representative, explaining the details of the problem.
1412
The FROM/TO instruction cannot be executed due to a control bus
error with an intelligent function module.
Reset the C Controller module and set it to RUN again. If the same
error is displayed again, an intelligent function module, CPU module,
or base unit is faulty. Please consult your local Mitsubishi service
center or representative, explaining the details of the problem.
1413
In the multiple CPU system, a CPU module incompatible with the
multiple CPU system is mounted.
• Remove the incompatible CPU module from the main base unit. Or,
replace the incompatible CPU module with a compatible one.
Alternatively, mount the CPU modules in the CPU slot and slot 0 to 2.
• An intelligent function module, CPU module, or base unit is faulty.
Please consult your local Mitsubishi service center or representative,
explaining the details of the problem.
An error was detected on the system bus.
• Self-diagnostic error of the system bus
• Self-diagnostic error of the CPU module
• Reset the C Controller module and set it to RUN again. If the same
error is displayed again, an intelligent function module, CPU module,
or base unit is faulty. Please consult your local Mitsubishi service
center or representative, explaining the details of the problem.
1414
• Failure of a mounted module was detected.
• In the multiple CPU system, a CPU module incompatible with the
multiple CPU system is mounted.
• Remove the incompatible CPU module from the main base unit. Or,
replace the incompatible CPU module with a compatible one.
• Reset the C Controller module and set it to RUN again. If the same
error is displayed again, an intelligent function module, CPU module,
or base unit is faulty. Please consult your local Mitsubishi service
center or representative, explaining the details of the problem.
1415
Failure of the main or extension base unit was detected.
Reset the CPU module and set it to RUN again. If the same error is
displayed again, an intelligent function module, CPU module, or base
unit is faulty. Please consult your local Mitsubishi service center or
representative, explaining the details of the problem.
1416
A bus error was detected when power is turned on or the CPU module
is reset.
Reset the CPU module and set it to RUN again. If the same error is
displayed again, an intelligent function module, CPU module, or base
unit is faulty. Please consult your local Mitsubishi service center or
representative, explaining the details of the problem.
1430
The error of connected CPU was detected at the multiple CPU high
speed transmission.
Reset the CPU module and set it to RUN again. If the same error is
displayed again, a hardware failure may have occurred in the CPU
module. Please consult your local Mitsubishi service center or
representative, explaining the details of the problem.
1431
Error (Disconnected) with other CPU was detected at the multiple
CPU high speed transmission.
• Take a preventive measure against noise.
• Check if the CPU module is mounted on the main base unit correctly.
• Reset the CPU module and set it to RUN again.
If the same error is displayed again, a hardware failure may have
occurred in the CPU module. Please consult your local Mitsubishi
service center or representative, explaining the details of the
problem.
* 3 Either of "Stop" or "Continue" can be set for each module in "H/W error time CPU operation mode" in the <<I/O assignment settings>> tab
of C Controller setting utility.
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