Pilz PSSu E S RS485 - Manual (Page 17)

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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 Function description
Function description 4- ][Funktionsbeschreibung BA Einleitung Ser
The module enables communication via a serial interface.
][Funktionsbeschreibung Module Supply
Module supply
 The module supply provides the module with voltage.
][Funktionsbeschreibung_Peri Ser
Periphery supply
 The periphery supply provides the serial interface with voltage.
][Funktionsbeschreibung Datenaustausch Ser
Signal processing
 In each cycle, a max. of 8 Bytes of data can be transferred in both di-
rections between control system and module. The data to be trans-
ferred 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 mod-
ule.
 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.
][Funktionsdiagramm ST RS485 Ser
Schematic representation of signal processing with decentralised sys-
tem PSSu I/O:
][Funktionsdiagramm ST RS485 Ser 2
Schematic representation of signal processing with the PSSu PLC/
PSSu multi control system:
Ext. device
with
serial interface
RS485
Controller Electronic module
PSSu E S RS485(-T)
Head module
Bus system/
network
Module
bus
PSSu I/O
Ext. device
with serial
interface
RS485
Electronic module
PSSu E S RS485(-T)
Head
module
with
controller
Module
bus