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 ...

In our previous issue, we said a digital output module could be tested by using the PLC logic to force the output on and off then and observing the module’s response. If the module doesn't respond, ...

Let’s help the maintenance technicians and control engineers who get hauled out of bed in the middle of the night by creating code that is easier to troubleshoot. I’m writing this blog on behalf of ...

Digital/binary sensors and switches are essential for signal monitoring and system control in industrial control, industrial automation, motor control, and process automation. All the sensors’ outputs ...

Introducing the newest technology to your facility may come with a steep learning curve, but the benefits are especially large when it comes to a reduction in downtime troubleshooting. John Beach, ...

While robot original equipment manufacturers (OEMs) each offer their own tightly integrated controllers, recent developments now enable control by a programmable logic controller, or PLC. For ...