turck BL20 - Page 250

BL20 - Communication in CANopen
D301087 0308 - BL20 CANopen4-178
Table 112:
Meaning of the
data bits for SSI-
modules
Designation Value Description
A default setting
DIS_ERR_SSI
Encoder data
cable test
0 A Activate:
ZERO test of data cable.
1 Deactivate
After the last valid bit, a ZERO test of
the data cable is not carried out.
INVALID_BITS_
LSB
Number of
invalid bits
(LSB)
0 to 15 Number of invalid bits on the LSB side
of the position value supplied by the
SSI encoder. The meaningful word
width of the position value transferred
to the module bus master is as
follows: SSI_FRAME_LEN -
INVALID_BITS_MSB -
INVALID_BITS_LSB. The invalid bits
on the LSB side are removed by
shifting the position value to the right,
starting with the LSB.
INVALID_BITS_MSB +
INVALID_BITS_LSB must always be
less than SSI_FRAME_LEN.
Default 0 Bit = 0
hex
INVALID_BITS_
MSB
Number of
invalid bits
(MSB)
0-7 Number of invalid bits on the MSB
side of the position value supplied by
the SSI encoder. The meaningful
word width of the position value
transferred to the module bus master
is as follows: SSI_FRAME_LEN -
INVALID_BITS_MSB -
INVALID_BITS_LSB. The invalid bits
on the MSB side are zeroed by
masking the position value.
INVALID_BITS_MSB +
INVALID_BITS_LSB must always be
less than SSI_FRAME_LEN.
Default: 0 = 0
hex