Mitsubishi MELSEC Q Series Programming Manual page 935

Error
Error Contents and Cause
Code
[SP. UNIT DOWN]
• The unsupported module is mounted.
■Collateral information
• Common Information: Module No. (Slot No.)
• Individual Information:-
■Diagnostic Timing
• When an END instruction executed
[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 (intelligent function module/
special function module) is nearly removed,
completely removed, or mounted during
running.
■Collateral information
1403
• Common Information: Module No. (Slot No.)
• Individual Information:-
■Diagnostic Timing
• Always
[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 (intelligent function module/
special function module) is nearly removed,
completely removed, or mounted during
running.
■Collateral information
• Common Information: Module No. (Slot No.)
• Individual Information:-
■Diagnostic Timing
• Always
[CONTROL-BUS. ERR.]
When performing a parameter I/O allocation the
intelligent function module/special function module
could not be accessed during initial
communications. (On error occurring, the head I/O
number of the corresponding intelligent function
1411
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
[CONTROL-BUS. ERR.]
The FROM/TO instruction is not executable, due to
a control bus error with the intelligent function
module/special function module. (On error
occurring, the program error location is stored in
1412
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
Corrective Action
When the unsupported module is mounted,
remove it. If the module supports the feature, 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, explaining a detailed
description of the problem.)
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,
explaining a detailed description of the problem.)
• 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, or END cover. (Please consult your
local Mitsubishi representative, explaining a
detailed description of the problem.)
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, explaining a detailed description of
the problem.)
LED Status Corresponding
CPU Status CPU
QCPU
RUN:
Off/On
ERR.:
Flicker/On
CPU Status:
Stop/
*6
Continue
LCPU
RUN:
Off
ERR.:
Flicker QCPU
CPU Status:
Stop
12-15
1
2
3
12
6
6
7
8