Specific Commands - Resource Block; Write_Lock; Features_Sel; Specific Parameters - Sensor Transducer Block - Honeywell XNX Technical Manual

Specific Commands – Resource Block
This section outlines common commands that are available within the
Resource Block.

WRITE_LOCK

The WRITE_LOCK parameter is used to prevent parameter changes
from occurring within the device. When enabled, the only accessible
command remains WRITE-LOCK so that the parameter may be cleared.
When cleared, writing to the device is again enabled. When cleared, an
alert is generated by WRITE_ALM to indicate a change was made. The
alarm priority corresponds to the WRITE_PRI parameter.

FEATURES_SEL

The FEATURES_SEL command is used to turn on and off additional
features supported by the device. At this time, REPORTS, SOFTWLOCK,
and multi-bit alarming are supported.
Specific Parameters – Sensor Transducer Block
This section outlines common commands available within the Sensor
Transducer Block.
• Information
• Test
• Calibrate (Zero/Span)
• Configuration
This block does not contain parameters that allow engineering units to
be modified (modifications can be made through the analog input block).
Units within the Sensor Transducer Block automatically track values
programmed by the XD_SCALE parameter.
Specific Parameters – Analog Input Block
These commands that are available within the AI Block.

L_TYPE

This parameter is used to define the relationship between the measured
process value (Sensor Transducer Block) and the output of the AI Block.
XNX supports all linearization types. Setting this parameter to DIRECT
will pass the Transducer Block information without modification (i.e., the
AI output will be identical to the Transducer Block). Values between the
Sensor Transducer Block and the AI Block will remain linear.
XNX Foundation Fieldbus Technical Manual
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