Bedford Associates, founded by Richard Morley introduced the first Programmable Logic Controller in 1968. This PLC was known as the Modular Digital Controller from which the MODICON company derived its name. The History of the PLC as told to Howard Hendricks by Dick Morley provides an interesting insight into the early development of the PLC.
Schnieder Quantum PLC
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Longxinzhiye’s Batching Controller provides local display and transmits flow data for control capability. Plug-n-flow computer also provides for single and dual stage batching processes for use on liquids and gases requiring temperature, pressure, and compressibility compensation. Unit features LED backlit display, capable of showing 4 parameters simultaneously, and 8 expansion slots that accommodate electronic modules for I/O and communications (more…)