Strategy, Tag_desc (diagnostic), Test_rw (process) – National Instruments NI-FBUS User Manual

Page 98: Trk_in_d (scaling), Trk_scale (scaling), Trk_val (scaling), Update_evt (diagnostic), Write_alm (alarming), Write_lock (option)

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Chapter 4

Parameters

© National Instruments Corporation

4-33

NI-FBUS Configurator User Manual

STRATEGY

Used to identify groupings of blocks. Not used by the block itself.

TAG_DESC (Diagnostic)

User description for the purpose of the block.

TEST_RW (Process)

Unused by the block algorithm. Used to test interoperability of reads and
writes of different parameter types.

TRK_IN_D (Scaling)

Used to enable tracking of the output value to

TRK_VAL

. When this is

enabled, the output value of the block takes on the value specified in

TRK_VAL

.

TRK_SCALE (Scaling)

The scaling parameter used for the value specified by

TRK_VAL

.

TRK_VAL (Scaling)

The value the block will track when tracking is enabled by

TRK_IN_D

.

UPDATE_EVT (Diagnostic)

The current state of the update event, along with a time and date stamp.
This event is issued whenever a static parameter is changed and

ST_REV

is

incremented. The index information for the parameter that changed and the
new value of

ST_REV

is included in the alert.

WRITE_ALM (Alarming)

State of the alert generated if

WRITE_LOCK

is cleared, along with a time and

date stamp.

WRITE_LOCK (Option)

The software write lock for the device. When this is set to true, writes to all
configuration parameters of all blocks are disallowed. The

WRITE_ALM

block alarm is active when writes are allowed and clear when they are
disallowed.

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