This is first in a series of PLC wiring tutorials. PLC training software used in this video is at http://koldwater.com/PLC-Training-Software.html This is the first PLC training video in the PLC wiring series, subscribe to our channel so you do not miss each one as it is released. It is only logical to start with the first wiring circuit in PLC control design wiring, the E Stop circuit. Commonly found in electrical schematics as CR1 (Control Relay 1).