MatPLC is a PLC-like program for Linux (PLC = Programmable Logic Controller), licensed under the GNU GPL.
We take advantage of the fact that we have an underlying operating system and use its features to make the MatPLC modular. One module could be executing mnemonics. Another module is a PID loop. A different module handles I/O, or logs to a database. (These modules all already exist.) The MatPLC then coordinates their workings to present a simple interface to the user.
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