Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

Page: 710 / 1028

708
APPX
Appendix 1 Error Codes
11B3H PID operation
error • A value outside the range (SHPV
< 0) was specified for the auto
tuning (limit cycle method)
process value threshold
(hysteresis) width (SHPV).
Continue • Check and correct the process value
threshold (hysteresis) width (SHPV)
setting value.
Error location
information At instruction
execution
11B4H PID operation
error • The system area used for auto
tuning (limit cycle method) was
rewritten.
Continue • Check whether the occupied system
area has been rewritten with the PID
instruction.
Error location
information At instruction
execution
11B5H PID operation
error • As the auto tuning (limit cycle
method) process time was
exceeded, it was not possible to
properly acquire the

and

on
time. (

on >

,

on < 0,

< 0)
Continue • Increase the difference (ULV-LLV)
between the auto tuning output value
upper and lower limits, or reduce the
input filter constant (

) and auto tuning
process value threshold (hysteresis)
width (SHPV) values.
Error location
information At instruction
execution
11B6H PID operation
error • An overflow occurred with the
proportional gain (K
P
) calculated
when performing auto tuning (limit
cycle method).
Continue • Ensure that the process value (PV)
change increases.
• Reduce the difference (ULV-LLV)
between the auto tuning output value
upper and lower limits.
Error location
information At instruction
execution
11B7H PID operation
error • The integral time (T
I
) calculated
when performing auto tuning (limit
cycle method) was outside the 0
to 32767 range.
Continue • Increase the difference (ULV-LLV)
between the auto tuning output value
upper and lower limits, or reduce the
input filter constant (

) and auto tuning
process value threshold (hysteresis)
width (SHPV) values.
Error location
information At instruction
execution
11B8H • The derivative time (T
D
)
calculated when performing auto
tuning (limit cycle method) was
outside the 0 to 32767 range.
1200H Module
moderate error • A moderate error has been
notified from the intelligent
function module connected.
Stop/
continue • Check the detailed information (system
configuration information) of the error
by executing module diagnostics using
the engineering tool, identify the error
module, and eliminate the error cause.
System
configuration
information Always
1210H • An inter-module synchronous
signal error has been notified from
the intelligent function module
connected.
Continue
1220H Another CPU
module
moderate error • A moderate error has been
notified from another CPU
module.
Stop/
continue • Check the detailed information (system
configuration information) of the error
by executing module diagnostics using
the engineering tool, identify the error
module, and eliminate the error cause.
• Check the mounting status and reset
status of other CPU modules.
System
configuration
information Always
1240H Inter-module
synchronization
processing error • The execution interval of a
synchronous interrupt program
has exceeded the set value.
• The inter-module synchronous
interrupt program (I44) did not
complete within the inter-module
synchronization cycle.
Continue • 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 processing of
the interrupt program (I44) so that it
can be completed within the period
specified in the fixed scan interval
setting.
(2) Check and correct the fixed scan
interval setting value.
Time
information At interrupt
occurrence
1241H Inter-module
synchronization
processing error • The execution interval of a
synchronous interrupt program
has exceeded the set value.
• A cycle where the inter-module
synchronous interrupt program
(I44) was not executed was
detected.
Continue • Check and correct the interrupt disable
sections and the interrupt programs
with a high priority so that the inter-
module synchronous interrupt program
can be executed.

At interrupt
occurrence
Error
code Error name Error details and cause Stop/
continue Action Detailed
information Diagnostic
timing