The following are some basic facts about input loop power sources: The input module usually isn't a loop power source. Although 120V is common for digital loops, other voltages are also used. There ...

Industrial digital inputs sample and serialize the state of eight 24-V current-sinking inputs under SPI or pin-based timing control, allowing for readout of the eight states via SPI. Here is an ...

I/O modules are building blocks of industrial control systems used in end equipment such as PLC (Programmable Logic Controllers), PAC (Programmable Automation Controller) and DCS (Distributed Control ...

Programmable logic controller IO module. How hard is it to keep track of a binary electronic system? It can only be in one of two states: on or off, open or closed, 0 or 1. While that may be correct, ...

Optoisolators—also called optocouplers or photoisolators—are widely used to provide galvanic (ohmic) isolation of digital-signal inputs and outputs in industrial environments, as well as in other ...

With integrated diagnostics and override functions, PLCs have become easier to use and much less expensive. Before the automotive industry discovered the advantages of programmable logic controllers ...