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Code Listing by Steven Edmund

Code 1-3 of 3   






Matlab communication with a Programmable Logic Controller (PLC) over an RS-232 serial interface using ASCII Modbus protocol. This code was developed while working with an Eaton-ELC PLC device and was modified for general distribution. Standard Modbus communication protocols were employed.

Files included are:
ExampleCommunication.m - an example of using the attached files and additional notes on their use
serialstart.m -...



Determine the reaction order of a chemical reaction of the form: rate = Ao*[A]^a*[B]^b*exp(-Ea/R*T)
kinetic order determination by wide area search and model-data error minimization

kinfit attempts to determine the optimal order of...



Longitudinal Redundancy Check (LRC) for Modbus PLC Controllers using ASCII
LRC.m - The value appended to the end of each communication to assure that the data received is not corrupted. The LRC is the 2's compliment negation of the sum. When...