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Hi I've looked through the threads on this subject but all the code i've found and tried don't seem to giv me the correct CRC calculation. here's what i've tried, all using either polynomial's $A001, $8005, $1021 and clearing the CRC to $0000 and $FFFF but they don't give me the correct calc's...

Hi All, I thought I'd throw this question out there to see if anyone has dabbled in BACNet protocol code. If you don't know what BACNet is it's an international standard protocol that was developed to allow multiple vendors to communicate to each other without the need of expensive integration...

Hi all, Probably a real easy question to answer but i've looked through all the documentation trying to find out how to read the state of the output pins in to a variable so i can compare them to the input pins but have had no luck finding anything. (I've probably over looked it) I've tried...

Hi there, i'm making a RS232 interface between a Siemens controller and Diesel generator to allow control and monitoring of the generator. I had some weird things happening when using "@ptrinc" in my serin command, what was happening was the ascii code being passed onto the siemens controller...