Siemens Sinamics s120 Commissioning Manual page 277

Special settings
● Error bits (special case, several error bits)
If an SSI encoder has several error bits, the evaluation is activated in the list of experts as
follows using parameter p0434[x]:
Value = dcba
ba: Position of error bit in protocol (0 ... 63)
c: Level (0: Low level 1: High level)
d: Status of evaluation (0: Off, 1: On with 1 error bit, 2: On with 2 error bits ... 9: On with 9
error bits)
For several error bits, the following applies:
– The position specified under ba and the additional bits are assigned in ascending
– The level set under c is applicable for all error bits.
Example:
p0434 = 1013
--> the evaluation is activated, and the error bit is at position 13 with low level.
p0434 = 1113
--> the evaluation is activated, and the error bit is at position 13 with high level.
p0434 = 2124
--> the evaluation is activated, and the 2 error bits are at a high level from position 24.
● Fine resolution p0418 and p0419
In order to make full use of the entire traversing range of the absolute encoder, the
position information, including fine resolution, must not exceed 32 bits.
Example:
An SSI encoder without incremental tracks is used. The encoder has a singleturn
resolution of 16 bits and a multiturn resolution of 14 bits. The absolute position resolution
is therefore 30 bits.
Consequently, only a fine resolution of 2 bits can be set. Parameters p0418[x] and
p0419[x] in the list of experts should therefore be set to the value 2.
STARTER Commissioning Manual
Commissioning Manual, (IH1), 07/2016, 6SL3097-4AF00-0BP5
order.
Commissioning
3.19 Commissioning of SSI encoders
277