Mitsubishi Electric Q26UD(E)HCPU User Manual page 402

Error
Error and cause
code
[CONTROL SYS. DOWN]
Any of the following errors was detected in the
backup mode.
• The control system has not started up in the
redundant system.
• The control system has developed a stop error
in the redundant system.
• The CPU module in the debug mode was
connected to the operating standby system.
6310
• The error occurred at a startup since the
redundant system startup procedure was not
followed.
(This can be detected from the standby system of
the redundant system.)
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
[CONTROL SYS. DOWN]
• As consistency check data has not transmitted
from the control system in a redundant system,
the other system cannot start as a standby
system.
• The error occurred at a startup since the
redundant system startup procedure was not
6311
followed.
(This can be detected from the standby system of
the redundant system.)
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[CONTROL SYS. DOWN]
• As consistency check data has not transmitted
from the control system in a redundant system,
the other system cannot start as a standby
system.
• The error occurred at a startup since the
redundant system startup procedure was not
6312
followed.
(This can be detected from the standby system of
the redundant system.)
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[CONTROL SYS. DOWN]
The control system detected the error of the
system configuration and informed it to the
standby system (host system) in the redundant
system.
6313
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
400
Corrective action
• The standby system exists but the control
system does not exist.
• Check whether the system other than the
standby system is on or not, and if it is not
on, power it on.
• Check whether the system other than the
standby system has been reset or not, and
if it is has been reset, unreset it.
• Check whether the system other than the
standby system has developed a stop error
or not, and if has developed the error,
remove the error factor, set the control
system and standby system to the same
operating status, and restart.
• When the CPU module in the debug mode
was connected to the control system
operating in the backup mode, make
connection so that the control system and
control system are combined correctly.
• Confirm the redundant system startup
procedure, and execute a startup again.
• Replace the tracking cable. If the same
error occurs, the cause is a hardware
failure of the CPU module. Please consult
your local Mitsubishi representative.
• Confirm the redundant system startup
procedure, and execute a startup again.
• Replace the tracking cable. If the same
error occurs, the cause is a hardware
failure of the CPU module. Please consult
your local Mitsubishi representative.
• Confirm the redundant system startup
procedure, and execute a startup again.
Restart the system after checking that the
connection between base unit and the system
configuration (type/number/parameter of
module) are correct.
LED status, Corresponding
CPU status
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
RUN: Off
ERR.:Flashing
QnPRH
CPU Status:Stop
CPU