How PLCs interact via protocols like PROFIBUS, Modbus, and Ethernet/IP.
The primary academic resource for this topic is the book Autómatas Programables Josep Balcells José Luis Romeral automatas programables josep balcells pdf
This is the unique selling point of the Balcells methodology. Instead of jumping straight into ladder logic, the book teaches you to draw GRAFCET charts (steps, transitions, actions). Once the sequence is correct on paper, you learn how to translate that GRAFCET into a PLC program. This structured approach eliminates "spaghetti code" in industrial machines. How PLCs interact via protocols like PROFIBUS, Modbus,
: It uses the GRAFCET method extensively, which is essential for designing complex sequential processes. automatas programables josep balcells pdf