Mitsubishi Electric MELSEC iQ-R-R00CPU - Page 743

APPX
Appendix 1 Error Codes
741
A
31B1H SFC program
block, step
specification
error
• A non-existent SFC program step
was specified.
Stop • Check the detailed information (error
location information) of the error by
executing module diagnostics using
the engineering tool, display the error
program (step) by clicking the [Error
Jump] button, and correct the program.
• Turn on SM321 (Start/stop SFC
program) if it is off.
• Check the SFC program has existed.
• Check the execution status of the SFC
program.
Error location
information
At instruction
execution, at
SFC program
execution
31B2H SFC program
block, step
specification
error
• The specified step exceeds the
range that can be used in the SFC
program.
Stop • Check the detailed information (error
location information) of the error by
executing module diagnostics using
the engineering tool, display the error
program (step) by clicking the [Error
Jump] button, and correct the program.
• Turn on SM321 (Start/stop SFC
program) if it is off.
Error location
information
At instruction
execution
31B3H SFC program
block, step
specification
error
• The number of simultaneous
active block steps that can be
specified in the SFC program
exceeds the permissible value.
Stop • Check the detailed information (error
location information) of the error by
executing module diagnostics using
the engineering tool, display the error
program (step) by clicking the [Error
Jump] button, and correct the program.
Error location
information
At instruction
execution, at
SFC program
execution
31B4H • The total number of simultaneous
active steps that can be specified
in the SFC program exceeds the
permissible value.
At instruction
execution, at
SFC program
execution
31B5H • A SET Sn/BLm/Sn and RST Sn/
BLm/Sn instruction were specified
for the self step in the step
operation output.
At instruction
execution
Error
code
Error name Error details and cause Stop/
continue
Action Detailed
information
Diagnostic
timing