Errors Caused By Sfc Program Instruction - Mitsubishi Electric Q26UD(E)HCPU User Manual

15.3.10

Errors caused by SFC program instruction

(1) "OPERATION ERROR" has occurred at execution of the S(P).SFCSCOMR and
S(P).SFCTCOMR instructions
Check that the values of the following instruction devices are within the range.
• n1 (Block No.)
• n2 (Number of reading comments)
• n3 (Number of reading comments per scan)
When the values of the instruction devices shown above are within the range, set the comment file stored in the
memory other than ATA card
*1 Program memory, Standard ROM, SRAM card and Flash card.
(2) Comments cannot be read at execution of the S(P).SFCSCOMR and
S(P).SFCTCOMR instructions
Check the following items.
The SFC program has not been run. (Check the special relay
(SM331).)
The comment file to be used for instructions is not set with
the "Comment file used in a command" setting of the
parameter or with the QCDSET instruction.
Though the "Comment file used in a command" setting of the
parameter is set to "Use the same file name as the program",
the file which has the same name as the SFC program file
does not exist in the target memory.
The block specified with the S(P).SFCSCOMR and
S(P).SFCTCOMR instructions is not activated.
An activated step does not exist in the block specified with
the S(P).SFCSCOMR and S(P).SFCTCOMR instructions.
298
*1
as "Comment file used in a command".
Check item Corrective action
• Run the SFC program.
• Set the program execution type of the SFC program to
"SCAN".
• When performing the comment file setting with "Comment
file used in a command", correct the parameter.
• When performing the comment file setting with the
QCDSET instruction, execute the QCDSET instruction.
Create a comment file which has the same name as the SFC
program file and store it in the target memory.
Correct the block specified with the instruction or review the
executing condition of instruction.
(The comment of the active step or the comment of transfer
condition associating with the active step cannot be read,
since the block specified with the instruction is not activated.)
Review the executing condition of instruction.
(The comment of the active step or the comment of transfer
condition associating with the active step cannot be read,
since no activated step exists in the block specified with the
instruction.)