Alfa Laval SattBus ID:31

Interface Description

IGSS32 offers an interface for Alfa Laval Automation (SattControl) equipment based on the SattBus Message Specification. This interface is supported by most low-, middle- and high end PLC systems from Alfa Laval Automation. SattBus Message Specification is an application layer protocol which can be used on various network types, e.g. 64 kbit/s proprietary network or industri standard ethernet.

SattBus fieldbus provides as fast, reliable flow of information and acts as an interunit communicator in a system. All SattBus units can transmit and receive information (act as both slaves and masters). SattBus uses an ordinary, unshielded twisted-pair cable which makes for simple low-cost installation. There are more than 250,000 SattBus nodes installed world-wide.

The IGSS32 system polls the PLC equipment cyclically according to one of four user-defined time intervals. The time intervals are configurable from 100 milliseconds to 999 seconds. The system automatically groups process data in data blocks – thus fully exploiting the the communication link in relation to the present configuration.a

It is possible to apply event-oriented communication. Then the PLC equipment has control over when and which data to send to the IGSS32 system. In this way the use of available communication bandwidth can be optimised.

Technical Data

Electrical Interface : Proprietary 64 kBit/s twisted pair.
Protocol : SattBus Message Specification Version 1.3.
Types of data : Analog, I/O Ram, Registers (16- and 32 bits).
PLC types supported : All Alfa Laval equipment support SattBus interface.
Addressing : Node (PLC), Register (16 bit), bit offset (a whole number of words is read or written)
Supported platforms : Windows Vista, Windows XP, Windows 2003 Server, Windows 2000 .
Max. telegram size : 64 bytes pr. telegram
Max. number of nodes : 120
PC hardware requirements : SattBus PC board article number 4927202-02 or later.
PC software requirements : None