Figure 63: Structure data word BiSS
Start: Start bit is always 1
0: The bit following the start bit is always "0"
MT: Multiturn resolution ec41
ST: Singleturn resolution ec40
ERR: Error bit 0-active
WARN: Warning bit 0-active
CRC polynomial: 6 bit: x
6
+x
1
+1 → 0x43
These include e.g.encoders of the company Renishaw or Kübler
other BiSS encoders:
many other tested encoders contain only parts of the functionality of BiSS with
EDS, for example:
they only allow read access, but no write access
they contain no / usable data
they generally correspond to the specifications of the BiSS profile BP3 for encod-
ers, but differ in one point from them
the functionality / the memory content change with the date of the firmware of the
encoder
These encoders can often be evaluated although as BISS-C-unidirectional en-
coder, if the data word is configured accordingly.
Initialization of BiSS encoders:
If the stored manufacturer ID in the encoder is unknown to the encoder evaluation,
it attempts to establish communication with the encoder based on the stored data
in the encoder. If this fails, an error message is output and possibly the encoder
can be evaluated as BiSS-C unidirectional.
Even if the communication can be established error-free, it is possible that position
values or speeds are wrong because the data stored in the encoder do not corre-
spond to the profile or manufacturer specifications, which sometimes occurs in
practice.
Based on the detected encoder type in ec17 it is possible to evaluate to what ex-
tent the connected encoder has been detected.
If the COMBIVIS plaintext for ec17 contains the manufacturer name and the en-
coder type (e.g. 65 "BiSS Hengstler Acuro AC36 Singleturn"), there is an encoder
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