Festo DNCE-***-LAS, Руководство по эксплуатации

Страница: 32 / 130

DNCE−...−LAS
Festo DNCE−...−LAS 1003b English
32
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 T ype Label
0 ... 24 DATA Period counter P(23:0); 0 ... 24 bit (multiturn position)
3 ... 13 DATA Angle data S(12 ... 0); 3 ... 13 bit (singleturn position)
1 Error Error bit E0 (amplitude error)
1 Error Error bit E1 (frequency error)
5 ... 6 CRC Polynominal 0x25; x
5
+x
2
+x
0
(inverted bit output)
Fig.9