Mitsubishi Electric Q26UD(E)HCPU User Manual page 322

Error
Error and cause
code
[SP. UNIT DOWN]
• There was no response from the intelligent
function module/special function module in the
initial processing.
• The size of the buffer memory of the intelligent
function module/special function module is
invalid.
• The unsupported module is mounted.
• At power-on/reset, momentary power failure has
occurred.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
1401
• At power-on/At reset/When intelligent function
module is accessed
[SP. UNIT DOWN]
• There was no response from the intelligent
function module in the initial processing.
• The buffer memory size of the intelligent
function module is invalid.
• An unsupported module is connected.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset/When intelligent function
module is accessed
[SP. UNIT DOWN]
The intelligent function module/special function
module was accessed in the program, but there
was no response.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: Program error location
■Diagnostic timing
• When an intelligent function module access
instruction is executed
1402
[SP. UNIT DOWN]
The intelligent function module was accessed by
the program, but there was no response.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: Program error location
■Diagnostic timing
• When an intelligent function module access
instruction is executed
320
Corrective action
• Check the power supply.
• If an unsupported module is mounted,
remove it. When only supported modules
are mounted, the cause is a hardware
failure of the intelligent function
module/special function module, CPU
module, or base unit. Please consult your
local Mitsubishi representative.
If an unsupported module is connected,
disconnect it.
When only supported modules are
connected, reset the CPU module to run it
again. If the same error code is displayed
again, the cause is a hardware failure of the
CPU module, I/O module, intelligent function
module, END cover, branch module, or
extension module. Please consult your local
Mitsubishi representative.
The cause is a hardware failure of the
intelligent function module/special function
module, CPU module, or base unit. Please
consult your local Mitsubishi representative.
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a hardware failure of the CPU
module, I/O module, intelligent function
module, END cover, branch module, or
extension module. Please consult your local
Mitsubishi representative.
LED status, Corresponding
CPU status
QCPU
RUN: Off/On
ERR.:Flashing/On
CPU Status:
*3
Stop/Continue
LCPU
QCPU
RUN: Off/On
ERR.:Flashing/On
CPU Status:
*3
Stop/Continue
LCPU
CPU