place it at the output. The block supports signal status propagation. There is no
process alarm detection in the input selector function block.
Figure 8-28: Input Selector (ISEL) Function Block
A. Out
B. Selector
• IN (1-4) = Input used in the selected algorithm.
• DISABLE (1-4) = Discrete input used to enable the associated input channel.
• OP_SELECT = Input used to override algorithm.
• TRK_VAL = The value after scaling applied to OUT in local channel override.
• SELECTED = The selected channel number.
• OUT = The block output and status.
Figure 8-28 illustrates the internal components of the ISEL block. Table 8-30 lists
the ISEL block parameters and their descriptions, units of measure, and index
numbers.
F
OUNDATION
™
Fieldbus Manual
December 2022 00809-0500-4880
204 Emerson.com/Rosemount
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