KROHNE Summit 8800 Vol 3 - Manual (Page 121)

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08/2013 - MA SUMMIT 8800 Vol3 R02 en
SUMMIT 8800 COMMUNICATION 08
All Data transmissions are verified by appropriate checksum methods. Where alternatives
are available, CRC 32 is used; however often the transmitter device determines the checking
method used and this can be alternatives such as CRC16 or LRC.
8 .2 Basic Communication setup
The flow computer uses serial communication to transfer information from and to the flow com-
puter. Three serial hardware layers are available:
RS232 Used for short distances, point to point connections
RS485 Used for long distances, either point to point or multi-drop connections.
Ethernet Ethernet is the preferred way to communicate over a local area network (LAN).
The Summit 8800 I/O boards each have one serial RS board. The communication boards consist
of 3 RS serial ports plus one Ethernet port on the single communication board and two Ethernet
ports on the dual communication board.
All of them require a basic setup which are described in the following chapters. In further chap-
ters a detailed description will be given for the specific protocol.
8 .2 .1 Port selection
Select the hardware board and port for the protocol desired:
Figure 166 Communication board and port selection