By definition, digital inputs are either on or off. Thus, verifying the absence or presence of voltage is a critical part of troubleshooting digital input modules ...

In this design the industrial digital-input serializer (U1) translates, conditions, and serializes the 24V digital output of sensors and switches to CMOS-compatible signals required by ...

Higher amperage relay output modules and an 8-point input simulator module are now available from AutomationDirect for the Click series stackable micro brick PLCs.

Three new 32-point discrete I/O and five analog I/O expansion modules as well as three new temperature input modules have been added. Three 4-channel analog input and two 4-channel analog output ...

Despite this, however, the standard PLC model permeates the structure: the PuffinPLC library offers PLC-like semantics for the modules that wish to use them. For example, inputs can only change at the ...

Model NT2140 discrete AC power input modules have joined the BusWorks NT2000 Ethernet remote I/O family, and can sense on/off ...

Engineers and developers looking for a programmable logic controller (PLC) might be worth checking out the new CANADUINO Arduino MEGA 2560 compatible PLC which has been created by Universe Solder ...

Troubleshooting PLC Digital Input Modules, Part 2 If input power is missing, the causes can be such things as blown fuses, broken wiring, or broken connections.