Emerson Rosemount 5300 Series - Page 145

configured to be written periodically, the device can stop its normal operation after it
reaches its limit or fail to accept new values.
5.8.1 Assigning device tag and node address
A Rosemount 5300 Level Transmitter is shipped with a blank tag and a temporary address
(unless specifically ordered with both) to allow a host to automatically assign an address
and a tag. If the tag or address need to be changed, use the features of the configuration
tool. The tool basically does the following:
Procedure
1. Changes the address to a temporary address (248-251).
2. Changes the tag to a new value.
3. Changes the address to a new address.
When the transmitter is at a temporary address, only the tag and address can be
changed or written to. The resource, transducer, and function blocks are all
disabled.
5.8.2
FOUNDATION
™
Fieldbus block operation
Function blocks within the fieldbus device perform the various functions required for
process control. Function blocks perform process control functions, such as Analog Input
(AI) functions, as well as Proportional-Integral Derivative (PID) functions. The standard
function blocks provide a common structure for defining function block inputs, outputs,
control parameters, events, alarms, and modes, and combining them into a process that
can be implemented within a single device or over the fieldbus network. This simplifies the
identification of characteristics that are common to function blocks.
In addition to function blocks, fieldbus devices contain two other block types to support
the function blocks. These are the resource block and the transducer block.
Resource blocks contain the hardware specific characteristics associated with a device;
they have no input or output parameters. The algorithm within a resource block monitors
and controls the general operation of the physical device hardware. There is only one
resource block defined for a device.
Transducer blocks connect function blocks to local input/output functions. They read
sensor hardware and write to effector (actuator) hardware.
Resource block
The resource block contains diagnostic, hardware, electronics, and mode handling
information. There are no linkable inputs or outputs to the resource block.
Register transducer block
The register transducer block allows a service engineer to access all database registers in
the device.
Reference Manual Configuration
00809-0100-4530 April 2019
Reference Manual 145