In the previous two issues of this newsletter, we looked at troubleshooting digital input modules. Basically, we looked for the presence or absence of a voltage. With analog modules, it's trickier ...

Check the module's power and logic indicators. They should change state as you vary that input. If they don't, the module isn't responding. This used to mean an automatic replacement, but it may be ...

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. The Click C0-04TRS-10 ($54.00) is a ...

The isolated analog input module presented here is particularly suitable for industrial electronics applications. Sending analog signals from field sensors over long-distance cables is often difficult ...

Multiple input/output Programmable Logic Controller (PLC) module for educational purposes is fabricated because of current PLC Kit that was unable to enhance learners theoretical understanding and ...

Logic gate circuit elements such as XOR, NAND, NOR are implemented in conjunction with CMOS inverters. Through the construction of basic ratio logic gate, the adder and multiplier is simplified, and ...