8/18/2015 2:32 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365)
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Hello, You use SFCs when they are necessary.They are functions embedded in operating system of CPU.All CPUs can not support all SFCs and you need to check the instruction list of you CPU and check if it is applicable.The following manual will be your guide for S7-300/400 : System Software for S7-300/400 System and Standard Functions Volume 1 and Volume 2 I hope this helps, hdhosseini |
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8/18/2015 2:37 PM | |
Joined: 5/12/2006 Last visit: 9/25/2024 Posts: 22372 Rating: (3014) |
Hello,
SFC are Function which are integrated in the PLC. You can call it from you user program with the defined Interface an after download you program blocks to the target the SFC is executed. Which SFC you can use on which PLC you can read in the Instruction list S7-300
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