Mitsubishi Electric MELSEC iQ-R Series - Page 561

36 ERROR CODES
36.4 List of Error Codes
559
36
1B60H Standby system
CPU module
error
• In backup mode, the standby system
CPU module has not started up. (The
error is detected in the control
system.)
Continue • If the standby system is powered
off, power on the system.
• If the standby system CPU module
is in the RESET state, clear the
RESET state. If the same error
code is displayed again, the
possible cause is a hardware
failure of the CPU module. Please
consult your local Mitsubishi
representative.
 Always
1B61H Standby system
CPU module
error
• In backup mode, a stop error of the
standby system CPU module was
detected. (The error is detected in the
control system.)
Continue • Eliminate the error cause, and
restart the system. If the same
error code is displayed again, the
possible cause is a hardware
failure of the CPU module. Please
consult your local Mitsubishi
representative.
 Always
1B70H Tracking
communications
disabled
• Data communications with the other
system cannot be performed even in
backup mode. (The error is detected
in the control system or the standby
system.)
Continue • If the standby system is powered
off, power on the system.
• If a WDT error has occurred in the
other system CPU module,
eliminate the error cause, and
restart the system.
• Connect tracking cables securely
and properly to the connectors of
the redundant function modules in
both systems. (One cable shall be
connected between the IN
connector of the module in system
A and the OUT connector of the
module in system B. The other
cable shall be connected between
the OUT connector of the module
in system A and the IN connector
of the module in system B.)
• Take measures to reduce noise. If
the same error code is displayed
again, the possible cause is a
hardware failure of the CPU
module, redundant function
module, base unit, or tracking
cable. Please consult your local
Mitsubishi representative.
 Always
1B71H Tracking
communication
error
• Data communications with the other
system cannot be performed in one of
the two tracking cables even in
backup mode. (The error is detected
in the control system or the standby
system.)
Continue • Connect tracking cables securely
and properly to the connectors of
the redundant function modules in
both systems.
• Take measures to reduce noise. If
the same error code is displayed
again, the possible cause is a
hardware failure of the redundant
function module or tracking cable.
Please consult your local
Mitsubishi representative.
 Always
Error
code
Error name Error details and cause Stop/
continue
Action Detailed
information
Diagnostic
timing