In our previous two issues, we discussed troubleshooting digital output modules. Troubleshooting analog modules is a bit more complicated ... and possibly the scale (e.g., 1 to 1,600 on the PLC ...

Inputs can be either in digital or analog form. Robots and visual systems are intelligent devices that can send signals to PLC input modules. Output devices such as motors and solenoid valves ...

Transmitters are typically analog output devices (such as a temperature transmitter with a 4 to 20mA output), although pulse counting (e.g., reading and sending the speed of a motor) might be done ...

Microcontrollers are digital devices ... analog signals into a digital value but going the other direction is a bit tougher. Pulse-Width Modulation is used to approximate an analog output but ...

Higher amperage relay output modules and an 8-point ... provides 8 toggle switches to simulate input devices, 8 logic side green status LED indicators and an LED power indicator. AutomationDirect ...

In the examples, the output modules checked out OK. But what if they don't? As with input modules, output modules can be digital or analog. Typical digital outputs ... A simple way to do that is to ...