The Sel, Lines, MultiT and SingleT parameters are self-explanatory.
Other parameters, such as MTBase and MTEnable, are described elsewhere (see
Section "Sin/Cos incremental encoder with absolute value interface" on page 62).
NOTE
LinearSSIencoderswillbetreatedasrotarySSIencoders.Inthis
case,itisimpossibletodeterminethatthesystemisalinear
encodersystembasedontheencoderhead.
P 543[0] - ENC_CH1_MultiT=Numberofmulti-turnbits:0..14
DuetothedesignofthecyclicalSSIinterfaceasamotorfeedbackinterface,
thenumberofmulti-turnbitsislimitedto14(nolimitto14bitsinthecaseofa
Sin/CosinterfacewithSSIone-timereading).
P 545[0] - ENC_CH1_Code=SSIdecoding:BINARY(0)orGRAY(1)
Graydecodingwillbeselectedbydefault.Theotheroptionistousebinary
decoding.
P 546[0] - ENC_CH1_Mode=AvailableSSIauxiliarysettings
Thisparameterhasa16-bithexvalue.Withthedefaultsetting(0000h),SSI
wirebreakmonitoringwillbeenabled.Avalueof0001hwilldisableSSIwire
breakmonitoring,meaningthatonebitlesswillberead.
Thefollowingisalistofwhatsomeofthetermsinthetablebelowstandfor:
o
Data=Sequenceofalldatabits
o
EncObs=Wirebreakbit
o
Nothing=Nobit
o
POdd=Oddparitybit
o
PEven=Evenparitybit
o
Free=Afreebit
MOOG
ID
No.: CB40859-001 Date: 02/2018
MSD Servo Drive- Device Help
68
6 Encoder
ID Value Name
546 ENC_CH1_Mode
0000h Data_EncObs Default:withwirebreak
0001h Data_Nothing
0002h Data_POdd_EncObs ODDParity
0003h Data_Free_POdd_EncObs
0004h Data_POdd
0005h Data_Free_POdd
0006h Data_Free_EncObs
0007h Data_Free_Free_EncObs
000Ch Data_PEven_EncObs EVENParity
000Dh Data_Free_PEven_EncObs
000Eh Data_PEven
000Fh Data_Free_PEven
001Fh Data_Free Extradatareading
0020h Data_Free_Free
0021h Data_Free_Free_Free
0022h Data_Free_Free_Free_Free
Table 6.13: SSI mode parameters (all other values are reserved)
P616[0] - ENC_CH1_CycleCount = Sampling cycle in nx125µs (microseconds):
ENC_CH1_CycleCount can be used to slow down the timing for the cyclical SSI
encoder evaluation. By default, ENC_CH1_CycleCount = 1, i.e. the default setting
corresponds to 125µs sampling and cycles for the encoder evaluation. Different
settings must be viewed as special cases and must only be used when absolutely
necessary.
6.5.6Encodergearing
NOTE
Pleasereadthegeneralinformationonencodergearingfoundin
Section"Introduction"onpage50beforehand.