When I open a project in Step 7, I see SFC52/58/59 and they are protected.
Is there a way to unprotect them to see the program inside?
[?]: How to unprotect protected SFC
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http://plc.net.ru/viewtopic.php?p=147#147
![Image](http://img458.spamm.us/img458/746/s7canopener6bt.gif)
but internal PLC SFC is not possible unprotect, because it inside BIOS of PLC.
Try...
![Image](http://img458.spamm.us/img458/746/s7canopener6bt.gif)
but internal PLC SFC is not possible unprotect, because it inside BIOS of PLC.
Try...
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Hi there,
SFCs and SFBs are part of the PLC firmware.
What you see in STEP7 is only a "fake" empty (and protected
) block interface to help you call these SFx in your PLC program.
I can't imagine anybody (other then me) being interested in the real code behind those SFx.
If there are any then drop me a line and we can roll the iceberg upside-down![Cool 8)](./images/smilies/icon_cool.gif)
SFCs and SFBs are part of the PLC firmware.
What you see in STEP7 is only a "fake" empty (and protected
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
I can't imagine anybody (other then me) being interested in the real code behind those SFx.
If there are any then drop me a line and we can roll the iceberg upside-down
![Cool 8)](./images/smilies/icon_cool.gif)
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Special SFC/SFB
There is another "trick" with SFC/SFB blocks
===================================
I found topic at siemens official site:
http://support.automation.siemens.com/W ... viewreg=WW
inside FC630 is SPECIAL SFC!!!!!!!!!!!!!!!!!!
it is SFC65025 (sic!)
In spite of the fact that inside of FC630 - this SFC i RED (sic!)
it works!
So that means that there is a lot of undocumented
SFC/SFC. Now I'am looking for documentation and cracked
version of Step7 Editor which allows me work with this SFC/SFB
===================================
I found topic at siemens official site:
http://support.automation.siemens.com/W ... viewreg=WW
inside FC630 is SPECIAL SFC!!!!!!!!!!!!!!!!!!
it is SFC65025 (sic!)
In spite of the fact that inside of FC630 - this SFC i RED (sic!)
it works!
So that means that there is a lot of undocumented
SFC/SFC. Now I'am looking for documentation and cracked
version of Step7 Editor which allows me work with this SFC/SFB