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4.

Right-click on the 

ByteOffset

 terminal and select Create Constant, 

then enter 

0

 as the byte offset.

5.

Right-click on the 

8[TF] in

 terminal and select Create Control. In 

the front panel control that appears, you can use the button at index 0 
to control Run Fwd and the button at index 2 to control Fault Reset.

6.

Using the NI-DNET palette, place 

ncConvertForDnetWrite

 into 

your diagram.

7.

Wire the 

DnetData out

 terminal from the previous 

Convert

 into the 

DnetData in

 terminal of this 

Convert

.

8.

Right-click on the 

DnetType

 terminal and select Create Constant, 

then select 

INT

 from the enumeration.

9.

Right-click on the 

ByteOffset

 terminal and select Create Constant, 

then enter

2

 as the byte offset.

10. Right-click on the 

I32/I16/I8 in

 terminal and select Create 

Control. You can use the front panel control that appears to change 
Speed Reference.

11. Using the NI-DNET palette, place 

ncWriteDnetIO

 into your 

diagram.

12. Wire the 

DnetData out

 terminal from the previous 

Convert

 into the 

Data

 terminal of 

ncWriteDnetIO

.

For more information on the 

ncConvertForDnetWrite

 and 

ncConvertFromDnetRead

 functions, refer to the NI-DNET Programmer 

Reference Manual. For information on LabVIEW data types and their 
equivalent DeviceNet data types, refer to Chapter 1, NI-DNET Data Types, 
in the NI-DNET Programmer Reference Manual.

Since DeviceNet data types are very similar to C language data types, 
individual I/O members can be accessed in a straightforward manner. You 
can use the standard C language pointer manipulations to convert between 
C language data types and DeviceNet data types.

The following steps show an example of how standard C language can be 
used to access the Basic Speed Control Output Assembly described in the 
previous section.

1.

Declare an array of 4 bytes, as in the following.

NCTYPE_UINT8OutputAsm[4];