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Modbus Lrc
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 Modbus Lrc 

Code 1-13 of 13   






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 the total adition in the LRC constitutes a number greater then 8bits only the lowest 8bits are used to compute the LRC. LRC.m has two modes, in mode 1 it compares the LRC received to one calculated...



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...



Reads power, voltage and current data via RS485/MODBUS from a JLD416PVA meter.
Communicates with JLD416PVA meter over MODBUS RTU. Sends one read command to interrogate all six holding registers of the unit. Also parses the response into...



ModbusPal is a project to develop a PC-based Modbus simulator. Its goal is to reproduce a realistic environment, with many slaves and animated register values. Almost everything in ModbusPal can be customized and controlled by scripts.



A class to manage Modbus frames and another to make a Modbus server. The both classes are fully portable since it's made with Qt. An example of a modbus server is given. The code is very simple and comprehensive.



Java modbus slave scanner - NetBeans 6.5 project



ModLink is a set of native VCL components for Borland/CodeGear/Embarcadero Delphi and C++ Builder that offer a sophisticated solution for seamless integration of Modbus communication protocol into your own Windows applications.

With...



Based on WSH, OLE, and other MS Windows technologyes - tool for simple simulate PLC with ModBus, for PLC and SCADA developers.

Moved to https://code.google.com/p/plcsimulator/



A free Modbus RTU/ASCII implementation for embedded systems. It is designed to be portable and ports are available for ARM STR71x, ATMega168, Freescale/Motorola Coldfire MCF5235, TI-MSP430, LPC214X, Z8Encore, Win32 and Linux.



Compiere MFG+SCM Manufacturing Extended System (MES). Include Shop Floor Control, Supply chain management, Quality management, modbus interface, iReport barcode extension etc. Support batch and on demand manufacturing. Works alone or connected to...



This controller must be able to be programmed by a dummy.It's a PC based controller. Graphical programming provided with standard library and allow user to create custom library. It will be connected to ethernet/profibus/modbus/serial IO.



232Analyzer is an advanced serial protocol analyzer software, terminal, debugger, monitor, sniffer, it allows programmers, engineers to control, debug, monitor, sniff, test and analyze serial port activities with RS232/RS485/RS422/TTL converters.



kpib.m contains code for GPIB and serial port communication for a number of scientific instruments, organized so that a single common command syntax can operate them all. For example, the command:
r = kpib(INSTRUMENT,GPIB,'read');
will...