FNM alpha SM 230, User Manual, Page: 17 / 72

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Description of device-specific features
Pin Designation Function
Y.1 I
2
C CLK clock line I
2
C bus
*1
Y.2 I
2
C Data data line I
2
C bus
*1,*2
Y.3 SPI out data output SPI bus
*1
Y.4 SPI in data input SPI bus
*2
Y.5 +12V positive supply voltage
Y.6 ON/OFF switching input activation / disconnection SM 230
*4
Y.7 TxD data output UART
*1,*6
Y.8 RxD data input UART
*1,*6
Y.9 DIG in 2 digital input channel 2
*2,*7
Y.10 DIG in 1 digital input channel 1
*2,*7
Y.11 PT1000 1 PT1000 interface Pin 1
Y.12 PT1000 2 PT1000 interface Pin 2
Y.13 PT1000 3 PT1000 interface Pin 3
Y.14 PT1000 4 PT1000 interface Pin 4
Y.15 ADC 10V analogue input 0 - 10 V
*2
Y.16 Vref output reference voltage for ADC and DAC 2.5 V
*5
Table: Pin assignment sensor interface
Mind the maximum / minimum level (see chapter "Technical data")
*1 load resistance
≥
100 KΩ
*2 input resistance 1 KΩ
*3 max. 1 mA
*4 optional
*5 max. 100 mA
*6 deactivated in the delivery status
*7 level see "Technical data"
Designation Function
Interior contact signal
External contact ground
Table: Assignment antenna socket