Fieldbus Functionality
4-12
Mode Parameters
Mode parameters are used to change the block mode
from one state to another. There are four types of mode
parameters: Target, Actual, Permitted, and Normal.
The Target mode is the mode that was assigned to a
block and is used to change a block to a desired mode.
The Actual mode is the current mode of the block.
The Permitted mode lists the modes that are allowed for
a block. Setting the Permitted modes prevents
unauthorized changes to the operating mode of a block.
To do this, configure the Block:Mode Permitted
parameter to allow only the desired operating modes. It
is recommended to always select OOS as one of the
Permitted modes.
The Normal mode is the mode the block should be set to
during normal operation conditions. Only the Permitted
modes are displayed.
Locate Mode Parameters
In the resource and transducer blocks, the mode
parameters are normally found in the Process menu. In
all other function blocks, they are found in the Common
Config menu. The mode parameters will also be
included in the All parameter list; see “Working with
Device Blocks” on page 4-14.
You can view and edit the Target mode parameter by
tapping the MODE button in the menus.
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