Mitsubishi Electric MELSEC iQ-R Series User Manual page 239

Error Error name
code
22E0H Parameter verification
error
2400H Module verification error
2401H Module verification error
2420H Fuse flown
2440H Module major error
Error details and cause
• In the multiple CPU system, the
system parameter settings of the host
CPU module differ from those of other
CPU modules.
• In the multiple CPU system, the
system parameter settings are
overwritten only to the host CPU
module, and the settings differ from
those of other CPU modules.
• The module information at power-on
differs from the information of
modules actually mounted.
• The I/O module or intelligent function
module is not mounted properly or
was removed during operation.
• A CPU module, I/O module, or
intelligent function module was
mounted on the base unit during
operation.
• The output module with a blown fuse
has been detected.
• In the multiple CPU system, the
settings of the control CPU in the
system parameters differ from those
of other CPU modules.
• An error has been detected in the I/O
module or intelligent function module
during the initial processing of the bus
control.
Corrective action
• Check the detailed information
(parameter information) of the error
by executing module diagnostics
using CW Configurator, and correct
the system parameter settings
corresponding to the displayed
number for the CPU No.2 and later.
The settings need to be the same
among all the CPU modules. (The
module synchronization setting and
fixed scan communication setting
need to be the same between the
CPU modules that use these
functions.)
• When the system parameter settings
are changed, update the settings of
all the CPU modules connected. (The
system parameter settings must be
same in all the CPU modules.)
• Check the detailed information
(system configuration information) of
the error by executing module
diagnostics using CW Configurator
and check the module corresponding
to the displayed slot number.
• Take measures to reduce noise.
• Reset the bus. If the same error code
is displayed again, the possible cause
is a hardware failure of the error
module. Please contact your local
Mitsubishi Electric sales office or
representative.
• Check the detailed information
(system configuration information) of
the error by executing module
diagnostics using CW Configurator
and check the module corresponding
to the displayed slot number.
• Do not mount a CPU module, I/O
module, nor intelligent function
module during operation .
• Take measures to reduce noise.
• Reset the bus. If the same error code
is displayed again, the possible cause
is a hardware failure of the error
module. Please contact your local
Mitsubishi Electric sales office or
representative.
• Check the FUSE LED of each output
module, and replace the one with the
FUSE LED ON.
• Check the detailed information
(system configuration information) of
the error by executing module
diagnostics using CW Configurator,
and replace the module
corresponding to the displayed slot
number.
• Correct the system parameter
settings for the CPU No.2 and later in
accordance with those of the CPU
No.1.
• Take measures to reduce noise.
• Reset the bus. If the same error code
is displayed again, the possible cause
is a hardware failure of the error
module. Please contact your local
Mitsubishi Electric sales office or
representative.
33.1 Error Codes for Self-diagnostics
Stop/ Diagnostic
continue timing
Stop At write
Power-on,
hardware
reset, bus
reset
Stop/continue Always
Stop/continue Always
Stop/continue Always
Stop Power-on,
hardware
reset, bus
reset
33 ERROR CODE LIST
237
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