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APPENDICES
A
Appendix 1 Error Codes
Appendix 1.3 List of error codes (1000 to 1999)
1403
[SP. UNIT DOWN]
• The unsupported module is mounted.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• Always
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.
RUN: Off/On
ERR.:Flashing/On
CPU Status:
Stop/Continue
*3
QCPU
[SP. UNIT DOWN]
• There was no response from the intelligent
function module/special function module when
the END instruction is executed.
• An error is detected at the intelligent function
module/special function module.
• The I/O module (including the intelligent function
module/special function module) is nearly
disconnected, removed, or mounted while the
system is running.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• Always
The cause is a failure of the CPU module,
base unit, or the intelligent function
module/special function module in the access
destination. Please consult your local
Mitsubishi representative.
[SP. UNIT DOWN]
• There was no response from the intelligent
function module when the END instruction is
executed.
• An error is detected in the intelligent function
module.
• The I/O module (including the intelligent function
module) is nearly disconnected or removed
while the system is running.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• Always
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.
LCPU
1411
[CONTROL-BUS ERR.]
When I/O assignment parameters are set, the
CPU module cannot access the intelligent function
module/special function module during initial
communications. (If an error occurs, the start I/O
number of the corresponding intelligent function
module/special function module is stored in the
common information.)
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• At power-on/At reset
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a failure of the intelligent function
module/special function module, CPU
module, or base unit. Please consult your
local Mitsubishi representative.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QCPU
1412
[CONTROL-BUS ERR.]
The FROM/TO instruction is not executable, due
to a control bus error with the intelligent function
module/special function module. (If an error
occurs, the program error location is stored in the
individual information.)
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: Program error location
■Diagnostic timing
• During execution of FROM/TO instruction set
Reset the CPU module and run it again. If the
same error code is displayed again, the
cause is a failure of the intelligent function
module/special function module, CPU
module, or base unit. Please consult your
local Mitsubishi representative.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QCPU
Error
code
Error and cause Corrective action
LED status,
CPU status
Corresponding
CPU
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