Rockwell Automation 20-750-DNET PowerFlex DeviceNet Option Module - Manual (Page 62)

62 Rockwell Automation Publication 750COM-UM002B-EN-P - October 2012
Chapter 5 Using the I/O
Enable the DeviceNet Scanner
A rung in the ladder logic must be created and assigned to the 1756-DNB
scanner Command Register Run bit. This rung enables the scanner to transfer
I/O on the network.
Example Datalink Data
The Datalink data used in the example program is shown in Figure 11 . Note that
to describe the parameters to which the Datalinks are assigned, you may want to
add descriptions to the automatically-created generic controller tags or create a
UDDT. For this example, the DL_From_Net tags were created to describe the
drive parameters to which these Datalinks are assigned. For example,
DL_From_Net_01_Stop_Mode_A indicates that option module
Host
Parameter 01 - [DL From Net 01] is assigned to drive parameter 370 - [Stop
Mode A]. This same method applies to the DL_To_Net tags.
Figure 11 - ControlLogix Controller Example Datalinks for Ladder Logic Program Using a Drive
Generic Profile
IMPORTANT This rung must always be included in the ladder logic program.