Festo DFME-Las Série Notice D'utilisation page 35

DFME−...−LAS
ence signal. As a result, common−mode interference is suppressed. In addition, the
data are secured through a CRC code.
The BiSS interface supports 2 read−out modes:
the sensor data channel for fast desynchronisation (clock up to 10 MHz) of
the sensor information
the parameter channel for reading and writing sensor parameters and
storage of user−specific data in a zero−voltage−secure way in the EEPROM of
the sensor.
Differentiation is made using the start bit; details can be taken from the named
specification.
Fig. 8: Sensor data communication
Bits Type
0 ... 8 DATA
3 ... 13 DATA
1 Error
1 Error
5 ... 6 CRC
Fig. 9
Festo DFME−...−LAS 0904NH English
Label
Period counter P(7:0); 0 ... 8 bit (multiturn position)
Angle data S(12 ... 0); 3 ... 13 bit (singleturn position)
Error bit E0 (amplitude error)
Error bit E1 (frequency error)
5
Polynominal 0x25; x +x
2 0
+x (inverted bit output)
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