Hi, I am an electronics engineer, with 10 years of experience in industrial automation projects with PLCs, HMIs, Inverters, RFID, etc., Siemens, AB, Schneider and others, in factories of different areas (automotive, plastic, paper, etc.). the proposal says that it is to modify a plc program by adding logic en a PLC, but I would need more details of the work to assess it correctly. I am new in freelancer, It will be a pleasure to carry out your projects.