Mitsubishi Electric MELSEC-Q Series Programming Manual page 144

• The operation when a command of S(P).SFCTCOMR instruction is in ON status at S(P).SFCTCOMR instruction execution
completed is as follows.
S.SFCTCOMR instruction re-executes when a command for S.SFCTCOMR instruction is in ON status.
Even if a command for SP.SFCTCOMR instruction turns ON, SP.SFCTCOMR instruction is not executed.
• For the comment files to be used with S(P).SFCTCOMR, set them in the PLC File tab of the PLC parameter dialog box or
at "file set instruction (QCDSET(P)) for comments". Executing S(P).SFCTCOMR without setting of comment file to use, 0 is
stored to "the total number of transition conditions ((d1) +0)" and "the number of transit condition that have read
comments((d1) +1)". At this time, the device specified in (d2) turns ON for 1 scan. When the comment file setting is
configured in the PLC File tab of the PLC parameter dialog box but the file does not exist at power-on or reset, "FILE SET
ERROR" (error code: 2400) will occur.
• The following table lists the availability of reading comments stored in the memories by the S(P).SFCTCOMR instruction.
 Readable,  Not readable
Memory type
SRAM card (drive 1)
Flash card (drive 2)
Standard ROM (drive 4)
ATA card
SD memory card
*3 If the S(P).SFCSCOMR instruction is executed to the ATA card or SD memory card where the comments are stored, an operation error
(error code: 4130) occurs.
4 SFC PROGRAM CONFIGURATION
142
4.8 SFC Comment Readout Instruction
Availability of reading comments



*3

*3
