KL320x/KS320x | Analog Input Terminals for Pt 100 (RTD) or NTC 10K · 0 次阅读

Default setting of the registers

R17: 0xED68 corresponds to -90.8 Ω
R18: 0x4E20 corresponds to 2000 * 16-5 = 0,01907 Ω/digit
R19: 0x0000
R20: 0x00A0

R32: 0x0106
R33: 0x0000
R34: 0x0100

The gain and offset compensation only has to be carried out once, i.e. it does not have to be repeated or corrected for any of the other implemented elements.

For the two-wire connection, with short-circuited line resistance (+R1-Rl1) the raw ADC value of the line resistance (contained in R1) has to be entered in register R21.