Emerson Rosemount 2240S, Reference Manual, Page: 79 / 194

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Reference Manual
00809-0100-2240, Rev DA
Configuration/Operation
October 2017
Configuration/Operation
5.8 Device capabilities
5.8.1 Link active scheduler
The Rosemount 2240S can be designated to act as the backup Link Active Scheduler (LAS) in the event
that the LAS is disconnected from the segment. As the backup LAS, the Rosemount 2240S will take over
management of communications until the host is restored.
The host system may provide a configuration tool specifically designed to designate a particular device
as a backup LAS. Otherwise, this can be configured manually.
5.8.2 Device addressing
F
OUNDATION
fieldbus devices use addresses divided into four sub ranges as shown in Table 5-5 .
Table 5-5. Address Ranges for F
OUNDATION
Fieldbus Devices
Address range
(decimal)
Address range
(hexadecimal)
Allocation
0 through 15 00 through 0F Reserved
16 through 247 10 through F7 Permanent devices
248 through 251 F8 through FB
New or decommissioned
devices
252 through 255 FC through FF
Temporary (“visitor”) devices.
Example: 375/475
communicator