Mitsubishi Electric MELSEC iQ-R Series - Page 596

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36 ERROR CODES
36.4 List of Error Codes
3752H System bus
error
• In a redundant configuration of
extension cables, a bus access error
has been detected in an extension
cable (active side) between redundant
extension base units.
• In a single configuration of extension
cables, a bus access error has been
detected in an extension cable
between extension base units.
(The error is detected in the control
system.)
Stop • Check the detailed information
(extension cable information) of
the error by executing module
diagnostics using the engineering
tool, and connect the extension
cable, in which the error has been
occurred, securely and properly to
the connectors of the base units. If
the same error code is displayed
again, the possible cause is a
hardware failure of the CPU
module, base unit, or extension
cable. Please consult your local
Mitsubishi representative.
Extension
cable
information
Always
3755H System bus
error
• In a redundant system with redundant
extension base unit, a bus access
error has been detected in an
extension cable between a main base
unit and the redundant extension
base unit. (The error is detected in the
control system or the standby
system.)
Stop • Check if the extension cable is
properly connected. If not, power
off the main base unit and
reconnect the cable.
• If the extension cable is connected
properly, the possible cause is a
hardware failure of the CPU
module, base unit, or extension
cable. Please consult your local
Mitsubishi representative.
Extension
cable
information
Always
3760H Control system
CPU module
error
• In backup mode, a stop error of the
control system CPU module was
detected. (The error is detected in the
standby system.)
Stop • Eliminate the error cause, and
restart the CPU modules in both
systems.
 Always
3780H Redundant
system
configuration
error
• A network module that does not
support the redundant system
function is mounted on the main base
unit.
• A network module with a firmware
version that does not support the
redundant system function is mounted
on the main base unit.
• An Ethernet interface module whose
network type of the port 1 and/or port
2 is set to an option other than
"Ethernet" is mounted on the main
base unit.
Stop • Check the detailed information
(system configuration information)
of the error by executing module
diagnostics using the engineering
tool, and check the module
corresponding to the displayed
slot number. If the module does
not support the redundant system
function, remove the module from
the base unit.
• Check the firmware version of the
corresponding module. If the
module does not support the
redundant system function,
remove the module from the base
unit.
• Set the network type of both port 1
and port 2 to "Ethernet" in the
system parameters ("I/O
Assignment Setting"). If the same
error code is displayed again, the
possible cause is a hardware
failure of the CPU module, base
unit, or network module. Please
consult your local Mitsubishi
representative.
System
configuration
information
At power-on, at
RESET
3781H Redundant
system
configuration
error
• Two or more redundant function
modules are mounted.
Stop • Mount only one redundant
function module.
System
configuration
info
rma
tion
At power-on, at
RESET
3782H Redundant
system
configuration
error
• An extension base unit is connected. Stop • Remove all extension base units. System
configuration
information
At power-on, at
RESET
3783H Redundant
system
configuration
error
• In redundant mode, nine or more CC-
Link IE Field Network modules or CC-
Link modules are mounted.
Stop • Reduce the number of CC-Link IE
Field Network modules and CC-
Link modules to eight or less for
each.
System
configuration
information
At power-on, at
RESET
Error
code
Error name Error details and cause Stop/
continue
Action Detailed
information
Diagnostic
timing