Function description
Operating Manual PSSu E S 2AI I se(-T)
21417-EN-04
12
4
Function description
4.1
Block diagram
Module Bus
Periphery
Supply
+ 24 V DC
Module
Supply
+ 5 V DC
Data
(ST)
Input
Input
11 12
21
22
ADC
13 23
C-Rail
4.2
Module features
4.2.1
Functions
The module supply provides the module with voltage.
The input signals are read in, analogue prefiltered and converted into digital signals. The
resolution is 12 bits (4095 steps) and is converted into a 16 Bit value. Additional signal pro-
cessing can be defined using the system software (see schematic representation of signal
processing). The individual steps are described in the "Configuration" section.
The input signals are transmitted to the head module via the ST module bus. As an option
the input module can send status information for each input.
All the configuration data is stored in the head module and is assigned to the input module
on restart. This way the configuration data is retained even if you change the input module.
Schematic representation of signal processing:
IN
ADC
Filter
Limit
values
Data
format
ST
module
bus
Manufact.
scaling
User
scaling
