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 ...

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 ...

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, ...

In our previous issue, we noted that the first step in troubleshooting digital input modules is to verify the power source of each loop. If input power is missing, the causes can be such things as ...