Mitsubishi Electric MELSEC iQ-R Series User Manual page 242

Error Error name
code
24C4H System bus error
24C5H System bus error
24C6H System bus error
24C8H System bus error
24D0H System bus error
24E0H System bus error
2520H Invalid interrupt
33 ERROR CODE LIST
240
33.1 Error Codes for Self-diagnostics
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.
• The extension level setting of the Q
series extension base unit is
overlapping with that of any other
extension base units.
• An error was detected on the system
bus.
• An error was detected on the system
bus.
• Even though an interrupt was
requested, there is no interrupt factor.
Corrective action
• 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 base unit,
extension cable, or module (I/O
module or intelligent function module)
connected. Please contact your local
Mitsubishi Electric sales office or
representative.
• 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 base unit,
extension cable, or module (I/O
module or intelligent function module)
connected. Please contact your local
Mitsubishi Electric sales office or
representative.
• 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 CPU
module or extension cable. Please
contact your local Mitsubishi Electric
sales office or representative.
• 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 extension
cable, or module (I/O module or
intelligent function module)
connected. Please contact your local
Mitsubishi Electric sales office or
representative.
• Check and correct the level setting of
the Q series extension base unit.
• Check the connection status of the
extension cable.
• 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 CPU
module, base unit, or extension cable.
Please contact your local Mitsubishi
Electric sales office or representative.
• 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 CPU
module or base unit. Please contact
your local Mitsubishi Electric sales
office or representative.
• 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 CPU
module, base unit, or module (I/O
module or intelligent function module)
connected. Please contact your local
Mitsubishi Electric sales office or
representative.
Stop/ Diagnostic
continue timing
Stop At module
access
Stop At module
access
Stop At module
access
Stop Power-on,
hardware
reset, bus
reset
Stop Always
At module
access
Stop Always
Stop At interrupt
occurrence