Mitsubishi Electric MELSEC iQ-F Series - Precautions for System Configuration

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APPX
Appendix 5 Conversion of the SFC Program
• After replacement with GX Works3, a jump to the initial steps (S0 to S9) of other blocks will be replaced with a block start
step (without end check) [BS] + unconditional transition + an end step. The block start step will be added as the maximum
step No. in own block + 1.
• A reset jump containing a self-reset will be replaced with an end step after replacement with GX Works3. When the reset
jump used in an FX3U/FX3UC project is not a self-reset, reexamine the program.
• An SFC block containing the following will be deleted after replacement with GX Works3. Modify the program if necessary.
- Jump to a non-existent step
- Jump to a step other than the initial steps of other blocks
GX Works2 GX Works3 (after reading another format)
GX Works2 GX Works3 (after reading another format)
0
10
0
Block0 Block1
1
0
1
1
S0 S0
N Action0
TR0
Transition0
S1 S1 N Action1
TR1
Transition1
In this example, the maximum step No.
in Block 0 is S1, and S2 is assigned to
the block start step.
Block start step (without end check) [BS]
BL1
S2
BS
S2
EndStep
TR2
TRUE
Block0 Block1
S0 S0
N Action0
TR0
Transition0
Unconditional Transition
End step
0
10
0
1
10
N Action0
N Action1
S0 S0
TR0
Transition0
S1 S1
TR1
Transition1
EndStep
End step