In our previous two issues, we discussed troubleshooting digital output modules. Troubleshooting analog modules is a bit more complicated, for two reasons: Analog modules aren't on/off, as digital ...

Introduces the basic theory, operation and programming of programmable logic controllers; Demonstrates programming examples, set-up examples and troubleshooting, as well as PLC timing, counting, ...

Let's use that mixer example from above. Suppose you can see that the limit switch is tripped, but there's no power coming out of the motor starter. Can you outline the next few troubleshooting steps?