Steve 
PLC toggle logic emulates the function of flip flop circuits that are commonly used in electronics and computer systems. What is a Flip Flop in a PLC? You may have heard of a flip flop in electronics and computer systems, but what is a flip flop in a PLC? A flip flop in PLC programming … Read more
A ladder logic simulator is a software application that lets you simulate the operation of a PLC ladder diagram with a personal computer, mobile phone or tablet. It allows you to test your PLC ladder diagram without the need to purchase any PLC hardware. A ladder logic simulator also has the ability to control the … Read more
In the very early days of PLC programming ladder diagrams were configured and loaded into a PLC using dedicated hand held programmers. These hand held programmers were extremely slow and tedious to use. Programming was made a lot easier with the introduction of PC’s and interface software using text based operating systems such as the … Read more
Relay logic is a hard wired control system using instrumentation, switches, timers, relays, contactors, motors and actuators. Traditional machine and process automation was accomplished using relay logic. Automating a machine using relay logic requires a mass of wiring and magnitude of devices to perform even the simplest of tasks. Some of the other problems with … Read more