Tag: PLCs
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PLC Input & Output Modules Circuits
The PLC Input/output modules are control ports either built into the PLC unit or, more commonly, are packaged as separate plug-in modules where each module contains a set of ports. These I/O modules act as interfaces to the outside world. I/O Modules can be broadly classified into two groups: Those that utilize discrete I/O levels…
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How to Connect Discrete Sensors to PLC Inputs
Discrete Sensor Outputs Basically sensor outputs can be categorized into two types: discrete also referred to discrete or logic and proportional also called analog. Discrete sensors supply a single logical output (1 or 0) e.g. a flow switch used to detect the fluid flow through a pipe whereas proportional/analog sensors provide an analog electronic…