Siemens SITRANS FC310, Краткое руководство по эксплуатации, Страница: 31 / 54

4.2 Connecting the FC310
4.2.1 Warnings
WARNING
Improper handling
The sensor connected to this device can be operated with high pressure and corrosive media.
Therefore improper handling of the device can lead to serious injuries and/or considerable
material damage.
Cablespecifications
● Only use cables with at least the same degree of protection as the sensor to install the
sensor. It is recommended to use cables supplied by Siemens S.A.S., Flow Instruments.
● Siemens supplied cables can be ordered with M12 plug on both ends or without plug.
● To guarantee the IP67 degree of protection, ensure that both ends of the cables are given
equivalent protection from ingress of moisture.
● For further information on Siemens-supplied cables, see Technical Data (Page 47).
WARNING
Cable requirements
Cables must be suitable for the temperature (at least 70 °C) and be flammability-rated to at
least V-2.
Note
End Of Line (EOL) termination
The FCT010 EOL termination DIP switch is default set to EOL active. To change termination
setting see Warnings (Page 31).
It is important to terminate the Modbus RS-485 line correctly at the start and end of the bus
segment. Impedance mismatch results in reflections on the line which can cause faulty
communication transmission.
If the device is at the end of the bus segment, it is recommended to terminate the device. The
following table shows the relation between the DIP switch settings and the permissible
communication interface set-ups. Default configuration is EOL active.
Connecting
4.2 Connecting the FC310
SITRANS FC310
Compact Operating Instructions, 01/2019, A5E44932112-AB
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