Mitsubishi Electric MELSEC iQ-F Series Handbook page 31

Precautions when Converting the Projects
• When converting FX3G projects using GX Works3, be careful because the program (instructions and devices) may be
changed.
• When converting projects, the number of steps may increase and writing to the FX5S may be impossible. Check the
number of steps after replacement.
• Characters used for the label name in GX Works2 may correspond to reserved words or illegal characters in GX Works3. In
that case, change the label name.
For precautions regarding instruction and device conversion, refer to Page 92 Instruction Replacement List.
Precautions when Replacing the Parameters
When converting FX3G projects to FX5S projects, the setting data of the parameters (PC parameters and network
parameters) and special modules (intelligent function modules) will be deleted. Therefore, it is necessary to set the data with
GX Works3 again.
Also, GX Works3 does not support the following parameters of the FX3G, so it is necessary to set these parameters with GX
Works3 again.
• Network parameters (CC-Link)
• Intelligent function module parameter (AnyWireASLINK)
Precautions when Replacing Other Functions
Precautions when Using the High-speed Counters
When the high-speed counters (C235 to C255) are used with the FX3G, they will not operate just by switching to the FX5S.
It is necessary to set the FX3 Series compatible high-speed counters and change the program by the parameter. For the
setting procedure, refer to the following.
■Parameter Setting Procedure of the FX3 Series Compatible High-speed Counters
1.
Select "Long Counter Specification" at the specification for High-speed counters.
[Parameter]  [FX5SCPU]  [Module Parameter]  [High Speed I/O]  "Input Function"  "High Speed Counter" 
"Detailed Setting"  "Other"
2 Replacement from FX3G to FX5S
2.4 Conversion of the Projects
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