Mitsubishi Electric MELSEC iQ-R Series User Manual page 115

Error Error name Error details and cause
code
24C0H System bus An error was detected on the system
error bus.
24C1H System bus An error was detected on the system
error bus.
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.
24C3H System bus An error was detected on the system
error bus.
24C4H System bus An error was detected on the system
error bus.
24C5H System bus An error was detected on the system
error bus.
24C6H System bus An error was detected on the system
error bus.
24C8H System bus An error was detected on the system
error bus.
Action
• Take measures to reduce noise.
• Reset the remote head module, and run it again.
If the same error code is displayed again, the
possible cause is a hardware failure of the
remote head module, base unit, extension
cable, or module (I/O module or intelligent
function module) connected. Please consult
your local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the remote head module, and run it again.
If the same error code is displayed again, the
possible cause is a hardware failure of the
remote head module, base unit, extension
cable, or module (I/O module or intelligent
function module) connected. Please consult
your local Mitsubishi representative.
• 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 number.
• Check the connection of an extension cable.
• Take measures to reduce noise.
• Reset the remote head module, and run it again.
If the same error code is displayed again, the
possible cause is a hardware failure of the
remote head module, base unit, extension
cable, or module (I/O module or intelligent
function module) connected. Please consult
your local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the remote head module, and run it again.
If the same error code is displayed again, the
possible cause is a hardware failure of the
remote head module, base unit, extension
cable, or module (I/O module or intelligent
function module) connected. Please consult
your local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the remote head 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.
• Take measures to reduce noise.
• Reset the remote head 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.
• Take measures to reduce noise.
• Reset the remote head module, and run it again.
If the same error code is displayed again, the
possible cause is a hardware failure of the
remote head module or extension cable. Please
consult your local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the remote head 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
System Always
configuration
information
System At module
configuration access
information
System At module
configuration access
information

At module
access
 At module
access

At power-on,
at RESET
4 TROUBLESHOOTING
113
4.7 Error Codes
4