Mitsubishi Electric MELSEC iQ-R Series - Page 575

36 ERROR CODES
36.4 List of Error Codes
573
36
2481H Multiple CPU
error
• In a multiple CPU system, any CPU
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.
Stop • Check the mounting status and
reset status of the CPU modules
other than CPU No.1.
System
configuration
information
Always
24C0H System bus
error
• An error was detected on the system
bus.
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.
System
configuration
information
At module
access
24C1H
24C2H System bus
error
• The I/O module or intelligent function
module is not mounted properly or
was removed during operation.
• An error was detected on the system
bus.
Stop ■CPU module
• 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.
System
configuration
information
Always
Error
code
Error name Error details and cause Stop/
continue
Action Detailed
information
Diagnostic
timing