Appendix 10. Using Analog Inputs Port (P6) - Denkovi DAEnetIP2 v2 User Manual

DAEnetIP2 v2 User Manual
21 Apr 2020

16. 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 v2 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 16.1. Using analog inputs port P6
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