Module 6 Analog I/O Troubleshooting
Questions With All Correct & Verified
Answers
One method to test an analog input channel is to compare the ___ of the inout signal to digitized
values. Correct answer-proportionality*
The ___ of measurement depends upon whether the analog input device produces a voltage or
current signal. Correct answer-method*
Another method of measuring analog current signals without breaking the circuit involves the
installation of a ___ in each loop. Correct answer-diode*
Current signals can be measured by using a ___. Correct answer-clamp-on ammeter*
Analog input voltage signals are measured by setting the meter to a suitable voltage range and
measuring from the appropriate input terminal to ___. Correct answer-DC COM*
If the problem is not a lack of signal, but an inaccurate one, typical causes include failed ___, a bad
analog input, or a bad input module. Correct answer-instrumentation*
If the input and digitized values are not equally proportional within a few percent, the PLC input ___
should be considered bad and the module replaced. Correct answer-channel*
Input ___ issues usually arise at static checkout(after a new installation), or after replacing a faulty
sensor with a new one with slightly different input characteristics. Correct answer-scaling*
Step 2 in the troubleshooting process for analog input loops is to check the ___. Correct answer-
status indicators*
Step 4 in the troubleshooting process for analog input loops is to test the ___. Correct answer-
suspected component.
PLC's are usually installed in climate controlled ___ while the analog output devices are connected to
the process in harsher plant conditions. Correct answer-Cabinet*
If the analog output is configured for a ___ output, measurements are taken directly across the PLC's
analog output terminals. Correct answer-voltage*
An analog output is tested by entering digital into the output's memory ___ and using a , multi-meter
to measure the voltage or current level of the output signal, Correct answer-tag*
The second step to test an analog output is to verify the output ___. Correct answer-
configuration*
A problem with an analog output is usually first noticed as an error reported by the operator or as an
___ on the HMI panel. Correct answer-alarm*
Questions With All Correct & Verified
Answers
One method to test an analog input channel is to compare the ___ of the inout signal to digitized
values. Correct answer-proportionality*
The ___ of measurement depends upon whether the analog input device produces a voltage or
current signal. Correct answer-method*
Another method of measuring analog current signals without breaking the circuit involves the
installation of a ___ in each loop. Correct answer-diode*
Current signals can be measured by using a ___. Correct answer-clamp-on ammeter*
Analog input voltage signals are measured by setting the meter to a suitable voltage range and
measuring from the appropriate input terminal to ___. Correct answer-DC COM*
If the problem is not a lack of signal, but an inaccurate one, typical causes include failed ___, a bad
analog input, or a bad input module. Correct answer-instrumentation*
If the input and digitized values are not equally proportional within a few percent, the PLC input ___
should be considered bad and the module replaced. Correct answer-channel*
Input ___ issues usually arise at static checkout(after a new installation), or after replacing a faulty
sensor with a new one with slightly different input characteristics. Correct answer-scaling*
Step 2 in the troubleshooting process for analog input loops is to check the ___. Correct answer-
status indicators*
Step 4 in the troubleshooting process for analog input loops is to test the ___. Correct answer-
suspected component.
PLC's are usually installed in climate controlled ___ while the analog output devices are connected to
the process in harsher plant conditions. Correct answer-Cabinet*
If the analog output is configured for a ___ output, measurements are taken directly across the PLC's
analog output terminals. Correct answer-voltage*
An analog output is tested by entering digital into the output's memory ___ and using a , multi-meter
to measure the voltage or current level of the output signal, Correct answer-tag*
The second step to test an analog output is to verify the output ___. Correct answer-
configuration*
A problem with an analog output is usually first noticed as an error reported by the operator or as an
___ on the HMI panel. Correct answer-alarm*
