Replacement of 8 existing Allen Bradley SLC500 PLCs with new Modicon M340 PLCs using Modicon’s quick wiring adapters. The quick wiring adapters allowed SAS to replace the PLCs in 2-3 hours each without touching any field wiring. This allowed for no plant downtime as the equipment that was being controlled by the PLC being replaced was operated manually while the PLC was being replaced. The new Modicon PLCs communicate with the Wonderware SCADA via Ubiquiti airMAX AC radios.