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Creating basic operations (BOP's) for use in CFC - possible ?

Created by: Toni.DK at: 10/3/2008 8:13 PM (3 Replies)

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10/3/2008 8:13 PM	Rate (0)
Toni.DK Posts: 3 Rating: (0)	Hi, i'm still new in the PCS7-world... I'm missing a couple of basic operations in CFC like "load/transfer", "move" "fan_out" (the opposite og MUX) ect. Today i'm using a number of simple FC's - but even with lot of CPU power this feelsnot very efficent.... My question: Is there any chance to define my own CFC_BOP's ? As far as i can see, in the SCL sources generated by the compiler, a BOP is a couple of lines SCL-code.... Any tip will be appreciated ! Thanks in advance.
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10/7/2008 3:02 PM	Rate (0)
cabreytj Silver Member Joined: 5/18/2006 Last visit: 10/21/2020 Posts: 170 Rating: (64)	Yes, you can build you own blocks, see manual PCS 7 V7.0 Programming Instructions for Blocks. You can build blocks based on Chart-in-Chart, Ladder Logic, Structured Text, and/or SCL. However, within PCS 7 there is a large selection of blocks provided in the standard libraries. I would recommend sticking with these standard blocks whenever possible since they make life easier when upgrading to new releases. cabreytj

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10/10/2008 11:21 AM	Rate (0)
Toni.DK Posts: 3 Rating: (0)	Hi cabreytj, thanks for your answer, but sorry,the manualdoes not mention anything about making "BOP's"... (i do not want to make FB's or FC's !) In the meantimeI found code for some of the BOP's in the folder \STEP7\S7cfc\bob and \STEP7\S7\m7blocks. This seems to be the CFC-library. It seems to be FUNCTIONS withound an FC-number.... So fari have not been make my own BOP and then find availiable in the CFC-editor....
Toni.DK Posts: 3 Rating: (0)
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10/12/2008 12:06 AM	Rate (1)
Dec Gold Expert Joined: 5/19/2006 Last visit: 12/3/2024 Posts: 549 Rating: (107)	Tony, Don't lose any more sleep. BOPs definitions are hard-coded in s7jdbmsx.dll. Only when you compile the chart, SCL/CFC imports the macro srcfrom s7bop.ilc. Don't ask me why Siemens designed this way. Dec

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