Siemens SITRANS TH400, Руководство по эксплуатации, Страница: 32 / 62

Functions
8.2 Device address
SITRANS TH400
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Operating Instructions, 06/2010, A5E01018688-02
8.2 Device address
8.2.1 SITRANS TH400 PROFIBUS PA
Note

Before operating two or more field devices, make sure that the device addresses are set
on the bus.

Assign each address only once, so that the addresses are allocated uniquely.
● The address range is from 1 to 125.
● From the warehouse, the SITRANS TH400-PA is set to the address 126.
● Normally in the PROFIBUS PA systems the masters are assigned the lower addresses.
● Begin the address assignment at 30.
8.2.2 SITRANS TH400 FOUNDATION field bus
Note

The following points are necessary for the SITRANS TH400-FF to function properly:
– a unique node address;
– a physical device identifier for the fieldbus.

The node address must be unique within the link (segment), while the physical device
identifier must be unique within the entire network.
● When delivered, the SITRANS TH400-FF has a unique physical device identifier.
● The device identifier is a concatenation of the string "SITRANS TH400" and part of the
serial number.
● The node address is set to "22".
● In the unit configuration, set the node address to a value that is unique within the link.
● To avoid address conflicts, the SITRANS TH400-FF automatically sets its address to one
of the temporary standard addresses between 248 and 251 as soon as it recognizes
another device with the same node address.