Emerson Rosemount 3051CF Series Reference Manual page 25

Reference Manual
00809-0100-4774
Types of modes
For procedures described in this manual, it is 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.
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. To make some 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.
MAN
In this mode, you can manually set variables that are passed out of the block for testing or
override purposes.
Other types of modes
Other types of modes are Cas, RCas, ROut, IMan, and LO. For more information, see the
Function Block
Mode propagation
Note
When an upstream block is set to OOS, this will impact the output status of all
downstream blocks. The figure below depicts the hierarchy of blocks:
2.5.3 Block instantiation
When a device supports block instantiation, you can define the number of blocks and
block types to match specific application needs. The number of blocks that can be
instantiated is only limited by the amount of memory within the device and the block
types that are supported by the device. Instantiation does not apply to standard device
blocks like the resource, sensor transducer, LCD display transducer, and SPM blocks.
Block instantiation is done by the host control system or configuration tool, but not all
hosts are required to implement this functionality. Refer to your specific host or
configuration tool manual for more information.
Reference Manual
Reference Manual.
Configuration
July 2020
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