Mitsubishi Electric MELSEC iQ-R Series User Manual page 575

Error Error name Error details and cause
code
2481H Multiple CPU • In a multiple CPU system, any CPU
error module other than CPU No.1 was
disconnected from the base unit
during operation. Or, any CPU
module other than CPU No.1 was
reset.
24C0H System bus • An error was detected on the system
error bus.
24C1H
24C2H System bus • The I/O module or intelligent function
error module is not mounted properly or
was removed during operation.
• An error was detected on the system
bus.
Stop/ Action
continue
Stop • Check the mounting status and
reset status of the CPU modules
other than CPU No.1.
Stop ■CPU module
• Take measures to reduce noise.
• Reset the CPU module and run it
again. If the same error code is
displayed again, the possible
cause is a hardware failure of the
CPU module, base unit, extension
cable, or module (I/O module or
intelligent function module)
connected. Please consult your
local Mitsubishi representative.
■Redundant function module
• The possible cause is malfunction
due to noise. Take measures to
reduce noise by checking the
distance of wires and cables, and
the grounding status of each
device.
• Execute a module communication
test. If the same error code is
displayed again, the possible
cause is a hardware failure of the
redundant function module.
Please consult your local
Mitsubishi representative.
■CPU module
Stop
• Check the detailed information
(system configuration information)
of the error by executing module
diagnostics using the engineering
tool and check the module
corresponding to the displayed
slot number.
• Check the connection status of the
extension cable.
• Take measures to reduce noise.
• Reset the CPU module and run it
again. If the same error code is
displayed again, the possible
cause is a hardware failure of the
CPU module, base unit, extension
cable, or module (I/O module or
intelligent function module)
connected. Please consult your
local Mitsubishi representative.
■Redundant function module
• The possible cause is malfunction
due to noise. Take measures to
reduce noise by checking the
distance of wires and cables, and
the grounding status of each
device.
• Execute a module communication
test. If the same error code is
displayed again, the possible
cause is a hardware failure of the
redundant function module.
Please consult your local
Mitsubishi representative.
Detailed Diagnostic
information timing
System Always
configuration
information
System At module
configuration access
information
System Always
configuration
information
36 ERROR CODES
573
36.4 List of Error Codes
36