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Instance attributes, Services, Instance attributes services – Rockwell Automation 1440-SPD02-01RB XM-220 Dual Speed Module User Manual

Page 116

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Publication GMSI10-UM004B-EN-P - May 2010

108 DeviceNet Objects

Instance Attributes

Services

1

Attributes can only be set while the device is in Program Mode. See the description of the Device Mode Object
for more information.

Table C.40 Transducer Object Instance Attributes

Attr ID

Access
Rule

Name Data

Type

Description

Semantics

3

Get

DC Bias

REAL

The measured average DC
bias of the transducer
signal in volts.

Volts

4

Get

Status

BOOL

Indicates whether a
transducer fault exists
(the measured DC Bias is
outside the range
specified by Fault High
and Low).

0 = No fault
1 = A transducer fault exists

7

Get/Set

Fault High

REAL

The maximum expected
DC Bias voltage from the
transducer in volts.

Volts

8

Get/Set

Fault Low

REAL

The minimum expected
DC Bias voltage from the
transducer in volts.

Volts

9

Get/Set

Power Type

USINT

Indicates the type of
power supplied to the
transducer.

0 = No power supplied
3 = Bias current for passive
magnetic sensors

13

Get/Set

DC Bias Time
Constant

REAL

The time constant value
used for exponential
averaging of the DC Bias
value (a low pass
filter/output smoothing
filter).

Seconds

Table C.41 Transducer Object Services

Service
Code

Class/Instance Usage

Name

Description

0E

h

Instance

Get_Attribute_Single

Returns a single attribute.

10

h

Instance

Set_Attribute_Single

Sets a single attribute.

1