Function description
Operating Manual PSSu K S RS232 Modbus ASCII
1001689-EN-05
11
4
Function description
4.1
Block diagram
Module Bus
Periphery
Supply
+ 24 V DC
Module
Supply
+ 5 V DC
Data
(ST)
RS232
13 23
(C-Rail)
11 12
21
22
14 24
4.2
Module features
4.2.1
Function description
The module enables communication via a serial interface.
Module supply
}
The module supply provides the module with voltage.
Periphery supply
}
The periphery supply provides the serial interface with voltage.
Signal processing
}
In each cycle, a max. of 8 Bytes of data can be transferred in both directions between
control system and module. The data to be transferred is stored temporarily in a send
and receive buffer.
}
Two additional status bytes and control bytes are available in the process image for
data exchange between control system and module.
}
All the configuration data is stored in the head module and is assigned to the module on
restart. This way the configuration data is retained even if you change the module.
