
IF52
•
Without blanking, a 13-bit encoder would provide 0 … 8,191
information at each 0 … 360º turn of the encoder shaft.
This would assume a setting of
01.
It is easy to understand that there are two different ways to use only 12 of the
13 bits available:
•
blanked the high order bit. The result corresponds to an encoder
providing 0 … 4,095 information while we turn from 0 … 180º, and
again the same 0 … 4,095 information while we continue from 180º to
360º. The resolution remains unchanged as far as the number of steps
per revolution is concerned.
•
We can also keep the
to 02 instead. This means we blank the low order bit now. As a
result, within one turn of 0 … 360º, we receive the encoder information
0 … 4,095 one time only, thus the total number of steps per revolution
is down by half.
SSI Baud Rate
This register sets the communication speed of the SSI interface with SSI
encoders.
Setting range: 100 Hz to 1MHz.
You are free to set any desired frequency between 0.1 kHz and 1000.0 kHz. For
technical reasons however, in the upper frequency range with Master operation,
the unit will only generate one of the following frequencies accurately:
1000.0 kHz
888.0 kHz
800.0 kHz
727.0 kHz
666.0 kHz
615.0 kHz
571.0 kHz
533.0 kHz
500.0 kHz
470.0 kHz
444.0 kHz
421.0 kHz
400.0 kHz
380.0 kHz
363.0 kHz
347.0 kHz
333.0 kHz
320.0 kHz
307.0 kHz
296.0 kHz
285.0 kHz
275.0 kHz
266.0 kHz
258.0 kHz
250.0 kHz
With Master operation, other settings will result in generation of the next upper
or lower value according to above list. With all settings < 250.0 kHz the error
between set rate and generated rate becomes negligible.
NOTE
It is mandatory to set the Baud rate also with Slave operation. In this case,
however, the setting is only used to determine the pause time for correct
synchronization (pause is detected after 4 clock cycles). The unit automatically
synchronizes with every remote clock signal within the specified Baud rate
range.
MAN IF52 I_E 1.1.odt
9 - Parameter settings
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Содержание IF52
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