Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

Page: 733 / 1028

APPX
Appendix 1 Error Codes
731
A
24C0H System bus
error • An error was detected on the
system bus.
Stop ■ CPU module
• Take measures to reduce noise.
• Reset the CPU module and run it
again. If the same error code is
displayed again, the possible cause is
a hardware failure of the CPU module,
base unit, extension cable, or module
(I/O module or intelligent function
module) connected. Please consult
your local Mitsubishi representative.
■ Redundant function module
• The possible cause is malfunction due
to noise. Take measures to reduce
noise by checking the distance of wires
and cables, and the grounding status of
each device.
• Execute a module communication test.
If the same error code is displayed
again, the possible cause is a
hardware failure of the redundant
function module. Please consult your
local Mitsubishi representative.
System
configuration
information At module
access
24C1H
24C2H System bus
error • The I/O module or intelligent
function module is not mounted
properly or was removed during
operation.
• An error was detected on the
system bus.
Stop
■
CPU module
• 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.
• Check the connection status of the
extension cable.
• Take measures to reduce noise.
• Reset the CPU module and run it
again. If the same error code is
displayed again, the possible cause is
a hardware failure of the CPU module,
base unit, extension cable, or module
(I/O module or intelligent function
module) connected. Please consult
your local Mitsubishi representative.
■
Redundant function module
• The possible cause is malfunction due
to noise. Take measures to reduce
noise by checking the distance of wires
and cables, and the grounding status of
each device.
• Execute a module communication test.
If the same error code is displayed
again, the possible cause is a
hardware failure of the redundant
function module. Please consult your
local Mitsubishi representative.
System
configuration
information Always
Error
code Error name Error details and cause Stop/
continue Action Detailed
information Diagnostic
timing