Function description
Operating Manual PSSu E S ABS SSI(-T)
21441-EN-05
14
4.3
Configuration
4.3.1
Parameter
The module has the following configuration options:
Configuration
Default
value
Meaning
Transmission rate
250 kHz
62.5 kHz
100 kHz
125 kHz
250 kHz
500 kHz
1 MHz
1.5 MHz
Gray code format
On
On: Gray code is activated.
Off: Binary code is activated.
Fault detection within the data
frame
(1)
On
On: Errors within the data frame are identified.
Off: Errors within the data frame are ignored.
Input data length
24
2 ... 32 Bit
(1)
An error within the data frame means that the absolute encoder does not terminate the
serial data transfer with a zero.
4.3.2
Input/output data
4.3.2.1
PSSu assignment in system environment A
In the PII the module occupies
}
32 bits with position data
}
8 bits with the status byte
Description
ST-PII bit assignment LSB …
MSB
Notes
Status byte
0 … 7
See "Status byte assignment" table
Position data
8 … 39
Measured value
Status byte assignment:
Meaning
Bit
Assignment
Data frame
0
0: No error within the data frame
1: Data frame faulty
(1)
SSI input
1
0: Counter input active
1: Counter input passive
Reserved
2
-
Reserved
3
-
Reserved
4
-
Reserved
5
-
