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Error
Error name
Error details and cause
code
24D0H
System bus
• The extension level setting of the
error
Q series extension base unit is
overlapping with that of any other
extension base units.
• An error was detected on the
system bus.
24E0H
System bus
• An error was detected on the
error
system bus.
■CPU module
2500H
WDT error
• The scan time exceeded the
execution monitoring time set in
parameter.
• The initial (1st) scan time
exceeded the execution
monitoring time set in the CPU
parameters.
• The execution time of the fixed
scan interrupt program exceeded
the interrupt execution interval.
■SIL2 function module, safety
function module
• The scan time exceeded the
execution monitoring time set in
parameter.
• The initial (1st) scan time
exceeded the execution
monitoring time set in the CPU
parameters.
■CPU module
2501H
• The scan time exceeded the
execution monitoring time set in
parameter.
• The 2nd or later scan time
exceeded the execution
monitoring time set in the CPU
parameters.
• The execution time of the fixed
scan interrupt program exceeded
the interrupt execution interval.
■SIL2 function module, safety
function module
• The scan time exceeded the
execution monitoring time set in
parameter.
Stop/
Action
continue
Stop
• Check and correct the level setting of
the Q series extension base unit.
• Check the connection status of the
extension cable.
• Check that the 10m mark is printed on
the base unit connected when using
the ten-meter extended cables
(RC100B). ( MELSEC iQ-R Module
Configuration Manual)
• 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, or extension cable. Please
consult your local Mitsubishi
representative.
Stop
• Take measures to reduce noise.
• Check the mounting status and reset
status of the CPU modules other than
CPU No.1.
• 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
or base unit. Please consult your local
Mitsubishi representative.
■CPU module
Stop
• Check the detailed information (time
information) of the error by executing
module diagnostics using the
engineering tool, check the time
setting, and take the following actions:
(1) Check and correct the program so
that it can be executed within the
execution monitoring time set in
parameter.
(2) Change the execution monitoring
time setting to an appropriate value.
• Check and correct the fixed scan
interrupt program so that the
processing completes within the
interrupt execution interval.
■SIL2 function module, safety function
module
• Check and correct the program so that
it can be executed within the execution
monitoring time set in parameter.
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.
Detailed
Diagnostic
information
timing
System
Always
configuration
information
System
Always
configuration
information
Time
Always
information
APPX
733
Appendix 1 Error Codes
A
- Quick Links:
- Part 1 Cpu Module Operation
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