IV25101A_e.DOC / Feb-08
Page 14 / 25
The following drawings explain the coherence between original encoder data, Round-Loop
setting, SSI-Offset and Direction register.
8192
2048
Round-Loop= 2048
SSI-Offset = 1024
0
360
180
degrees
1024
Original encoder signal
Round-Loop signal
Encoder 13Bit
Direction = 0
SSI-Offset = 1024
Round-Loop = 2048
Volt
T-Min
T-Max
Analogue Output (Output Mode = 1)
8192
2048
Round-Loop= 2048
SSI-Offset = 1024
0
360
180
degrees
1024
Original encoder signal
Round-Loop signal
Encoder 13Bit
Direction = 1
SSI-Offset = 1024
Round-Loop = 2048
Volt
T-Min
T-Max
Analogue Output (Output Mode = 1)
The Round-Loop function is also suitable to suppress the encoder overflow, when the
mechanical zero position of your encoder lies between your Teach-Min and Teach-Max values
and you do not like to change the mechanical situation. As shown in the subsequent picture,
you need to set the Round-Loop register to the full encoder resolution and then shift the zero
transition by setting the SSI Offset correspondingly.