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Table b-3. feature parameter options, Ff_gain (scaling, tuning), Ff_scale (scaling) – National Instruments FP-3000 User Manual

Page 86: Ff_val (process, scaling, tuning), Field_val (process, scaling, tuning)

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Appendix B

Fieldbus Parameters

FieldPoint FP-3000 User Manual

B-8

www.ni.com

FF_GAIN (Scaling, Tuning)

The gain by which the feed-forward input is multiplied before it is added to
the output value of the control block.

FF_SCALE (Scaling)

The scaling parameter used by the feed-forward value of the block.

FF_VAL (Process, Scaling, Tuning)

The feed-forward value.

FIELD_VAL (Process, Scaling, Tuning)

The value from the input channel, in percent of scale.

Table B-3. Feature Parameter Options

Option

Description

Unicode

The device supports strings in

Unicode

format. The FP-3000 does not

support this feature.

Reports

The device supports event report messages for alarming. If this feature
is not selected in the

FEATURE_SEL

parameter, the FP-3000 continues

to detect alarms and events, but does not report them over the bus.
In this case, the host must poll the alarm parameters to detect alarm
conditions as they change.

Faultstate

The device supports

Faultstate

behavior for output blocks.

Soft Write Lock

The device supports locking of configuration of parameters with the

WRITE_LOCK

parameter in the resource block. With this feature

selected and the

WRITE_LOCK

parameter written to

Set

, writes to all

static configuration parameters are disallowed.

Hard Write Lock

The device supports locking of configuration parameters. For the
FP-3000, a switch on the back of the device must also be set. If

Hard

Write Lock

is enabled, the switch disallows writes to all

configuration parameters in the device, including

FEATURE_SEL

.

Out Readback

The device provides a way for the action of output transducers to be
verified through a readback. The FP-3000 does not support this
feature.

Direct Write

The device provides a manufacturer-specific way to directly write to
I/O channels. The FP-3000 does not support this feature.