Pilz PSSu E S ABS SSI - Manual (Page 17)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-1
4.1 Module features
4 Function description
4 4000 Function description Function description 4- 4.1 Module features 4100 Module features 4- 4.1.1 Functions
Functions 4- ][Funktionsbeschreibung Module Supply
Module supply
 The module supply provides the module with voltage.
][Funktionsbeschreibung_Peri ABS SSI-Aus
Periphery supply
 The supply for the test pulse output is generated from the periphery
supply. It is galvanically isolated from the periphery supply.
][Funktionsbeschreibung_Ein ST-ABS SSI
As part of each cycle the module sends a pulse sequence at the test
pulse output (Cl) to the SSI absolute encoder. In turn the encoder trans-
mits its position data. The position data is read in at the module's input
(D) (see timing diagram: SSI data transfer).
With the system software the user can set the following values to adapt
the module to the encoder or higher level control system:
 Transmission rate
The frequency of the pulses at the test pulse output (Cl) determines
the transmission rate. The user can adapt the frequency to the encod-
er in a range from 62.5 kHz up to 1.5 MHz (see Technical Details).
 Input data length:
The module's input data length must be adjusted to the data length
of the absolute encoder.
The module can process up to 32 Bits. The default is 24 Bits.
 Data format:
The data format in which the module transmits the position data of the
connected absolute encoder to the head module.
– Gray code (default)
– Binary code
The position data is transmitted to the head module via the ST module
bus with 4 Bytes, irrespective of the configured input data length. The
module sends additional status information.
][Funktionsdiagramm ABS SSI