Appendix 10. Using Analog Inputs Port (P6) - Denkovi DAEnetIP2 User Manual

DAEnetIP2 User Manual
12 Sep 2013
17.

Appendix 10. Using analog inputs port (P6)

Each Analog input from port (P6) have two protection internal diodes shown on
figure 40. However they are useless if the resistor R1 is not connected in the way
shown on the figure. In order to protect each analog input and the whole DAEnetIP2
it is strongly recommend to connect R1 resistor (with value 22K for example) to
each analog input (P6.x). Using analog input without such resistor may cause easy
overvoltage or reverse voltage and damage of the controller.
Figure 40. Using analog inputs port P6
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