(not available for compact cards)
If an absolute encoder is set in ec16, e.g. Resolver,
Endat etc, the bits "counting revolutions" are automat-
ically set to 2 and by way the non-volatile storage of
the revolutions is activated.
If a non-absolute encoder is set, e.g. TTL or SinCos
without absolute track, the bits "counting revolutions"
are automatically set to 0.
➢ Parameter ec28 must be set to 1 or 2, if the value range shall be
passed at a multiturn encoder. Otherwise, there is a jump in the posi-
tion measurement when passing the multiturn range.
Signal periods per revolution ec29 periods per revolution
Number of signal periods per revolution
If the encoder has incremental signals, this parameter displays the number of sig-
nal periods per revolution (= increments per revolution). The number of periods of
the encoder must be set here for TTL and sine-cosine encoders (ec16 = 1…7). If
the encoder interface can read out this value from the encoder (e.g., at Endat,
Hiperface, BiSS with el. nameplate), it is displayed here and it can not be changed.
With activated incremental encoder evaluation at channel B, the number of signal
periods per revolution are adjusted. The maximum possible value is 16384.
For linear encoders with reference marks, the number of signal periods between
the reference marks is set here, or for distance-coded reference marks, the so-
called base distance.
See also 6.1.8 "Operation of non-absolute linear encoders (with and without refer-
ence marks))"
Virtual revolutions for linear encoders ec50 virtual rounds for linear encoder
virtual rounds for linear encoder
"Virtual revolution", means the changing of numbers of the encoder position ac-
cording to the whole number of motor pole pairs are passing.
Only for evaluation of linear encoders.
For digital encoders (EnDat digital), the amount by which the digital position word
changes is set here.
For encoders with incremental signals (EnDat+1Vss, Hiperface, SinCos, TTL), the
number of signal periods is set here.
This value also determines how the linear positions and speeds are converted into
rotative positions and speeds and displayed in e.g. ru33 and ru09.
Further information: 6.1.7, „Operation of absolute linear encoders“, page 251
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