Appendix 5 Conversion Of The Sfc Program; Differences In Specifications After Replacement - Mitsubishi Electric MELSEC iQ-F Series Handbook

Appendix 5
Below are described the procedure and precautions for converting FX3U/FX3UC projects created with the SFC program into
FX5U/FX5UC projects.
After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters.
This chapter describes the SFC program operations and specifications. For information not contained in this
chapter, refer to the following.
GX Works3 Operating Manual
MELSEC iQ-F FX5 User's Manual (Application)
MELSEC iQ-F FX5 Programming Manual (Program Design)

Differences in Specifications After Replacement

The differences in specifications of the SFC program between FX3U/FX3UC and FX5U/FX5UC are shown below.
Classification Item
SFC program Number of simultaneously activated steps
SFC operation SFC operation mode when power is turned off
and on or reset
Transition control Transition condition
SFC control Execution of SFC control instructions in interrupt program
instructions
Monitor Monitoring by special device
*1 When the number of steps exceeds 128, a stop error (31B3H) will occur.
*2 When the number of steps exceeds 128, a stop error (31B4H) will occur.
*3 After replacement, the setting is "Initial Start". To use "Resume Start", it is necessary to change the parameter and install the optional
battery.
*4 If a reset jump is contained in an FX3U/FX3UC project, the reset jump will be replaced with an end step when the project is replaced
with an FX5U/FX5UC project.
APPX
116

Appendix 5 Conversion of the SFC Program

Conversion of the SFC Program
In 1 block
Whole system
Resume start
Reset jump
SM8046 (STL operation)
SM8047 (STL monitor enabled),
SD8040 to SD8047 (ON state numbers)
FX3U/FX3UC FX5U/FX5UC
*1
512 steps 128 steps
*2
4096 steps 128 steps
*3
 
*4
 
 
 
 