TR-Electronic 65 Serie Montageanleitung Seite 162

Parameterization and configuration
6.6.7 Format SSI-interface
Selection
0:
1:
2:
3:
4-11:
In order to avoid position differences between PROFINET and SSI interface, the
exact number of SSI data bits under the parameter Data bits SSI-interface
must be programmed. The number results from the programmed Total measuring
range, see page 114.
6.6.7.1 No special format
A synchronous-serial data transmission with No special format is min. 8 bits, or
max. 28 bits long. The data transmission begins with the most significant bit (MSB)
and contains the position bits (P).
Related to a certain number of clocks, the data can be shifted arbitrarily by the
parameter data bits SSI-interface. The data can be transmitted right-justified
or left-justified, with leading "zeros" and without leading "zeros". Leading "zeros" are
produced if the parameter data bits SSI-interface is programmed larger, as it
would be necessary from the total measuring length.
Example
Measuring system:
-
-
-
-
-
Output right-justified
Programmed number of data bits = 24
MSB
1 2
0 0
Output left-justified
Programmed number of data bits = 22
MSB
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Page 118 of 131
Format SSI-interface
no special format
parity even
parity odd
toggle bit
checksum 28 after 21-28 data bits
1024 steps/revolution (10 bits)
4096 revolutions (12 bits)
--> Total measuring length = 22 bits
Code: Binary or Gray
Number of clocks: 24
3 – 24
21 0
– P 2
P 2
1 – 22
21 0
– P 2
P 2
TR-ECE-BA-DGB-0063 v15
LSB
LSB
23 24
0 0
Default
X
Printed in the Federal Republic of Germany
04/25/2022