Modes - Emerson 375 User Manual

Fieldbus Functionality

Modes

The resource, transducer, and all function blocks in the
device have modes of operation. These modes govern
the operation of the block. Every block supports both
automatic (AUTO) and out of service (OOS) modes.
Other modes may also be supported.
Types of Modes
For the procedures described in this manual, it will be
helpful to understand the following modes:
AUTO
The functions performed by the block will
execute. If the block has any outputs, these will
continue to update. This is typically the normal
operating mode.
MAN
In this mode, the output of the block can be
manually overwritten for testing purposes.
Out of Service (OOS)
The functions performed by the block will not
execute. If the block has any outputs, these will
typically not update and the status of any values
passed to downstream blocks will be "BAD".
Before you make changes to the configuration of
the block, change the mode of the block to OOS.
When the changes are complete, change the
mode back to AUTO.
Other Types of Modes
Other types of modes are Cas, RCas, ROut, IMan and
LO. For more information, see the Emerson Process
Management, Rosemount Division Function Block
manual, document 00809-0100-4783.
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