Block Descriptions; Function Block (Analog Input); Resource Block; Sensor Transducer Block - Honeywell XNX Technical Manual

Block Descriptions

All Fieldbus devices are arranged in a "block" operating configuration.
The Fieldbus Foundation has defined a set of standards that each unit
must follow. As a result, block details remain consistent among products
and manufacturers. A specially designated level, "Manufacturer Specific
Parameters," functions just as the name implies. Here, the Fieldbus
Foundation allows manufacturers to add functions specific to their
devices. Additional information covering definitions and descriptions can
be found at www.fieldbus.org

Function Block (Analog Input)

The function block is made up of a series of parameters which provide
the basis for system control and operation. Standard sets of function
blocks have been defined by the Fieldbus Foundation. These blocks are
available for input and output communication via the network.
The core duties of the Analog Input (AI) block are to process incoming
signals from the sensing element (gas concentration in this case) and
to make the data available for use in other function blocks. This data is
formatted in user-defined engineering units.

Resource Block

Each device has one resource block. The resource block is used to
describe characteristics of the individual device. Parameters such as
device name, manufacturer, and serial number are located here. There
are no linkable parameters located within this block.

Sensor Transducer Block

The sensor transducer block contains configuration data specific to the
individual device. Data such as sensor type and calibration date are
located within this block.

Common Block Operations

Each of the blocks within the transmitter share a common set of
programming modes. By setting a specific operating mode, the user will
be able to dictate the output of the transmitter to the network bus.
Description
AUTO
Out Of Service (OOS)
4 Accessed September 10, 2010.
10
.
4
Normal operating mode. All data input, calculations and
data output for the block will function
Setting operating mode to OOS disables all function
executions by the block.
XNX Foundation Fieldbus Technical Manual
Function