snertmetworst
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Yes, That would be my assumption also. Very strange, that this is not clearly documented in the help documentation suplied with visilogics.
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Hey guys, Here is a small update, i thought might be interesting for other people struggeling with this. I found that the numeric decimal veriable length does work. But only in certain situations. For example it is possilbe to construct a receive msg like this: R[11111111111] Here [11111111111] is the variable and "R" is static ascii, can be any ascii As ETX I used 0x0A. It only seems to work when ETX 1 byte long. And there can be nothing else behind the variable. I dont know why this is. But it seems to work for me.
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Joe and Simon, Thank you for you'r replies. I will play around with the range sollution Simon suggested, because i want to keep the cycle time as low as possible. As i assume this will be less resource consuming then string manipulation logic. Or is this assumtion incorrect? Cheers, Tom
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Hi everyone! Does anybody have experience with extracting numerical values from SCAN FB? Im communicating between controller and V350 over serial cable. And receive messages like: R+400<CR><LF> R-3000<CR><LF> Using <LF> as ETX. In the SCAN FB i have tried configuring this message in many different ways. But did not have succes. It alwas returns -1 in "Index of received message". Simple fixed length message without variables i can receive just fine. Any ideas? or pointers? Greets Tom