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
http://plc.net.ru/viewtopic.php?p=147#147
but internal PLC SFC is not possible unprotect, because it inside BIOS of PLC.
Try...
but internal PLC SFC is not possible unprotect, because it inside BIOS of PLC.
Try...
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- Posts: 1
- Joined: Fri Feb 16, 2007 11:31 pm
- Location: Argentina
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
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
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