• A/D conversion will convert a continuous value to an integer value.
• D/A conversion is easier and faster and will convert a digital value to an analog value.
• Resolution limits the accuracy of A/D and D/A converters.
• Sampling too slowly will alias the real signal.
• Analog inputs are sensitive to noise.
• The analog I/O cards are configured with a few words of memory.
• BTW and BTR functions are needed to communicate with the analog I/O cards for older PLCs such as the PLC-5s.
• Analog shielding should be used to improve the quality of electrical signals.
[an error occurred while processing this directive]