Emerson Rosemount 3144P, Справочное руководство

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134
Reference Manual
00809-0100-4021, Rev JA
Configuration
April 2017
Configuration
4.3 General block information
4.3.1 Device description
Before configuring the device, ensure the host has the appropriate device description file revision. The
device descriptor can be found on the F
OUNDATION
Fieldbus page on Emerson.com/Rosemount . As of
February 2011, the current revision of the Rosemount 3144P with F
OUNDATION
Fieldbus Protocol is device
revision 3.
4.3.2 Node address
The transmitter is shipped at a temporary (248) address, to enable F
OUNDATION
Fieldbus host systems to
automatically recognize the device and move it to a permanent address.
4.3.3 Modes
The resource, transducer, and all function blocks in the device have modes of operation that govern the
operation of the block. Every block supports both automatic (AUTO) and out of service (OOS) modes,
and other modes may also be supported.
Changing modes
To change the operating mode, set the MODE_BLK.TARGET to the desired mode. After a short delay, the
parameter MODE_BLOCK.ACTUAL should reflect the mode change, if the block is operating properly.
Permitted modes
It is possible to prevent unauthorized changes to the operating mode of a block by configuring MODE_-
BLOCK.PERMITTED to allow only the desired operating modes. It is recommended that OOS always be
selected as one of the permitted modes.
Types of modes
For the 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.
Process leaks could result in death or serious injury.

Do not remove the thermowell while in operation.

Install and tighten thermowells and sensors before applying pressure.
Electrical shock could cause death or serious injury.

Use extreme caution when making contact with the leads and terminals.