Datasheet

Ip251_02b_oi_e.doc / Dez-15 Page 17 / 28
The Round-Loop function is also suitable to suppress the encoder overflow, if 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.
8192
0
360°180°
Original encoder signal
Round-Loop signal (parallel 0utput)
Encoder 13Bit
Direction = 0
SSI-Offset = 2048
Round-Loop = 8192
2048
 With each change of the Round-Loop parameter, the offset value must
be re-entered.
 With use of the Round-Loop function it is also possible to change the
counting direction of the encoder, by appropriate setting the direction bit.
7.4. More parameters:
Parameter
Description
Parallel Mode:
Sets the code of the parallel output and the input source of the converter.
Parallel Mode :
Parallel output
Data source
0
Binary format
SSI encoder
1
Gray format
2
BCD format
3
Binary format
Serial RS 232
interface
4
Gray format
5
BCD format
Linearisation
Mode:
Sets the mode of linearization.
0: Linearisation off, all linearization registers are irrelevant.
1: Linearisation in a range of 0 – 100%
2: Linearisation over full range –100% to +100%
See example under section 7.2.3 „Linearisation”