Mitsubishi Electric MELSEC iQ-R Series User Manual page 576

Error Error name
code
24C3H System bus
error
24C4H System bus
error
24C5H
24C6H System bus
error
24C8H System bus
error
36 ERROR CODES
574
36.4 List of Error Codes
Error details and cause
• An error was detected on the system
bus.
• An error was detected on the system
bus.
• An error was detected on the system
bus.
• An error was detected on the system
bus.
Stop/ Action
continue
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.
Stop • 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
base unit, extension cable, or
module (I/O module or intelligent
function module) connected.
Please consult your local
Mitsubishi representative.
■CPU module
Stop
• 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 or extension cable.
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.
Stop • 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
extension cable, or module (I/O
module or intelligent function
module) connected. Please
consult your local Mitsubishi
representative.
Detailed Diagnostic
information timing
System At module
configuration access
information
System At module
configuration access
information


At module
access

At power-on, at
RESET