Mitsubishi Electric MELSEC iQ-R C User Manual page 67

Error code Error name
1988H Memory reservation error
2120H SD memory card error
2121H SD memory card error
2440H Module major error
2450H Module major error
24C0H System bus error
24C1H System bus error
24C2H System bus error
Description
Memory could not be reserved, or there are too
many tasks using the following functions.
• C Controller module dedicated function
• C intelligent function module dedicated function
• MELSEC data link function
• MELSEC iQ-R series data link function
• Data analysis function
The SD memory card was removed without the
card being unmounted.
An error has been detected in the SD memory
card.
An error has been detected in the I/O module or
intelligent function module during the initial
processing.
• A major error has been notified from the
intelligent function module connected.
• The I/O module or intelligent function module is
not mounted properly or was removed during
operation.
An error has been detected on the system bus.
An error has been detected on the system bus.
• The I/O module or intelligent function module is
not mounted properly or was removed during
operation.
• An error has been detected on the system bus.
Corrective Action
• The memory may be insufficient. End another
running task or reduce the access size.
• Check if the C Controller module or the C
intelligent function module is running normally.
• Reset the C Controller module or the C
intelligent function module.
• Reduce the number of tasks using the target
function, and retry.
• Review the size or number specified to the
arguments of the user program.
Unmount the SD memory card, and then remove
it.
Re-insert the SD memory card. If the same error
code is displayed again, the possible cause is a
hardware failure of the SD memory card. Replace
the SD memory card.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code
is displayed again, the possible cause is a
hardware failure of the module where the error
has been detected. Please consult your local
Mitsubishi representative.
• Take measures to reduce noise.
• Check the connection status of the extension
cable.
• Check the detailed information (system
configuration information) by performing module
diagnostics using an engineering tool, and
check the module corresponding to the
displayed slot number.
• Reset the CPU module. If the same error code
is displayed again, the possible cause is a
hardware failure of the module where the error
has been detected. Please consult your local
Mitsubishi representative.
• Take measures to reduce noise.
• Reset the CPU module. 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.
• Take measures to reduce noise.
• Reset the CPU module. 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.
• Check the detailed information (system
configuration information), 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. 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.
3 TROUBLESHOOTING
3.6 Error Code List
3
65