Rockwell Automation 1203-GK5 DeviceNet Communications Module FRN 1.xxx-3.xxx User Manual

Page 126

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F-6

Supported Emulated Block Transfer Commands (Parameter Read Full)

Figure F.4
Message Structure (Continued)

Message Operation

Parameter Read Full retrieves the attributes of the specified
parameter. The attributes for each parameter include the data,
minimum and maximum values, and the parameter text. The response
message returns this information.

If an error has occurred in reading any of the values, word 3 contains
the status word.

The parameter text is returned with each data word containing two
ASCII characters per word. The first and second characters are in
opposite order.

Example

In this example, a Parameter Read Full was performed through
block transfer on a 1336 PLUS drive. N10:10 shows the header
message for the request. The data is returned in the response data file,
starting with word 3, for parameter 20. Word 3 shows the present
value in drive units. Word 4 through word 8 provide scaling
information, used to convert drive units to engineering units for the
Human Interface Module (HIM). Word 9 through word 16 provide
the parameter name.

Drive Response (cont.)

Data

Word 19

Data

Word 20

Maximum Value

Default Value

Data

Word 21

Unit Text

Char 2

Char 1

Data

Word 22

Char 4

Char 3

Data

Word 17

Data

Word 18

File, Group, Element

Minimum Value

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