08.2012 Technology Option F01
Siemens AG 6SE7087-6QX70 (Version AN)
SIMOVERT MASTERDRIVES Compendium Motion Control 9-25
The resolution of the encoder must be stored in parameter P148. The
signal periods per revolution are set for Heidenhain encoders with
EnDat (see the nameplate). The measuring steps per revolution are
specified for SSI encoders. Consequently, you need a different setting
for SSI and EnDat encoders with the same resolution. The parameter is
input as powers of 2.
This parameter is initialized when P147 ≠ 0.
Example:
Number of Lines for Multiturn EnDat EQN1325
Setting
Resolution/
Revolution
P148.1 11 2
11
= 2048 8192
Signal periods/
revolution
EnDat encoder
P148.2 12 2
12
= 4096 -
Number of revolutions
that can be
distinguished
Number of Lines for Multiturn SSI
Setting
Resolution/
Revolution
P148.1 13 2
13
= 8192 8192
Measuring steps/
revolution
SSI encoder
P148.2 12 2
12
= 4096 -
Number of revolutions
that can be
distinguished
P148.7 3 2
3
= 8
Ratio between signal
periods and measuring
steps for SSI motor
encoder
P148.8 3 2
3
= 8
Ratio between signal
periods and measuring
steps for SSI
technology encoder
Number of lines
P148